-
V. I. Sharov,
A. A. Morozov,
R. A. Shindin,
V. G. Antonenko,
S. B. Borzakov,
Yu. T. Borzunov,
E. V. Chernykh,
V. F. Chumakov,
S. A. Dolgii,
M. Finger, [......],
M. Slunečka,
V. Slunečková,
A. Yu. Starikov,
L. N. Strunov,
T. A. Vasiliev,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New experimental results on ratio R
dp
of the quasielastic charge-exchange yield at the outgoing proton angle θ
p,lab = 0° for the nd → p(nn) reaction to the elastic np → pn charge-exchange yield, are presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory
of High Energies of the JINR (Dubna) at the neutron-beam kinetic energies of 0.55, 0.8, 1.0, 1.2, 1.4, 1.8, and 2.0 GeV. The
intense neutron beam with small momentum spread was produced by breakup of deuterons which were accelerated and extracted
to the experimental hall. In both reactions mentioned above the outgoing protons with the momenta p
p
approximately equal to the neutron-beam momentum p
n,beam were detected in the directions close to the direction of incident neutrons, i.e., in the vicinity of the scattering angle
θ
p,lab = 0°. Measured in the same data-taking runs, the angular distributions of the charge-exchange-reaction products were corrected
for the well-known instrumental effects and averaged in the vicinity of the incident-neutron-beam direction. These corrected
angular distributions for every of nd → p(nn) and np → pn charge-exchange processes were proportional to the differential cross sections of the corresponding reactions. The data were
accumulated by Delta-Sigma setup magnetic spectrometer with two sets of multiwire proportional chambers located upstream and
downstream of the momentum analyzing magnet. Inelastic processes were considerably reduced by the additional detectors surrounding
the hydrogen and deuterium targets. The time-of-flight system was applied to identify the detected particles. The accumulated
data treatment and analysis, as well as possible sources of the systematic errors are discussed.
PACS numbers13.75.Cs-25.40.Kv-25.60.Bx-25.10.+s
Physics of Atomic Nuclei 04/2012; 72(6):1007-1020. · 0.57 Impact Factor
-
L. N. Strunov,
V. G. Antonenko,
S. B. Borzakov,
Yu. T. Borzunov,
E. V. Chernykh,
V. F. Chumakov,
Yu. I. Ivanshin,
S. A. Dolgii,
M. Finger,
L. B. Golovanov, [......],
V. I. Sharov,
R. A. Shindin,
M. Slunečka,
V. Slunečková,
A. Yu. Starikov,
T. A. Vasiliev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: The measurements of np-spin observables at 0° have been performed for the first time on the Delta-Sigma experimental facility of LHE JINR up to
P
n
= 4.5 GeV/c using the monochromatic neutron beam. They include detailed measurements of the Δσ
L(np) spin differences and the study of the np → pn elastic charge-exchange process. In the Δσ
L(np) and −Δσ
L(I = 0) energy dependencies over the energy region Tkin = 1.2–3.7 GeV the peculiarity at 1.8 GeV was observed. Such energy behavior was predicted by the QCD approach as a signal
of the NN → 6q phase transition. For the exhaustive investigation of this effect it is necessary to measure the energy dependence of the
complete set of np observables with both longitudinal (L) and transverse (T) polarizations of the neutron beam and proton target. This will allow Direct Reconstruction of all three NN forward Scattering Amplitudes (DRSA) to be performed, and the observed peculiarity to be checked around Tkin = 1.8 GeV and at the higher energies using the Argand diagrams method.
The European Physical Journal Special Topics 04/2012; 162(1):125-132. · 1.56 Impact Factor
-
A. A. Morozov,
V. G. Antonenko,
S. B. Borzakov,
Yu. T. Borzunov,
E. V. Chernykh,
V. F. Chumakov,
S. A. Dolgii,
M. Finger,
L. B. Golovanov,
A. Janata, [......],
R. A. Shindin,
M. Slunečka,
V. Slunečková,
A. Yu. Starikov,
L. N. Strunov,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: The first results of the measurement of 0o of the cross-section ratioR
dp=0.50±0.02 in charge-exchange (np) reaction on H2/D2 targets at the neutron beam kinetic energie 1.0 GeV are presented. As a result the value of the ratio of non spin-flip to
spin-flip contribution innp→pn charge-exchange at 0o
r
np→pn
/nf/fl
=0.33±0.03 was obtained.
Czechoslovak Journal of Physics 04/2012; 55:A307-A314. · 0.42 Impact Factor
-
V. I. Sharov,
A. A. Morozov,
R. A. Shindin,
V. G. Antonenko,
S. B. Borzakov,
Yu. T. Borzunov,
E. V. Chernykh,
V. F. Chumakov,
S. A. Dolgii,
M. Finger, [......],
M. Slunečka,
V. Slunečková,
A. Yu. Starikov,
L. N. Strunov,
T. A. Vasiliev,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New experimental results on the ratio Rdp of the quasi-elastic charge-exchange yield at the outgoing proton angle qp,Lab \theta_{{p,{\rm Lab}}}^{} = 0° for the nd
® \rightarrow
p(nn) reaction to the elastic np
® \rightarrow
pn charge-exchange yield are presented. The measurements were carried out at the Nuclotron of the Veksler and Baldin Laboratory
of High Energies of the JINR (Dubna) at the neutron beam kinetic energies of 0.55, 0.8, 1.0, 1.2, 1.4, 1.8 and 2.0GeV. The
intense neutron beam with small momentum spread was produced by break-up of deuterons which were accelerated and extracted
to the experimental hall. In both reactions mentioned above the outgoing protons with the momenta p
p approximately equal to the neutron beam momentum p
n, beam were detected in the directions close to the direction of incident neutrons, i.e. in the vicinity of the scattering angle qp,Lab \theta_{{p,{\rm Lab}}}^{} = 0° . Measured in the same data taking runs, the angular distributions of the charge-exchange reaction products were corrected
for the well-known instrumental effects and averaged in the vicinity of the incident neutron beam direction. These corrected
angular distributions for every of nd
® \rightarrow
p(nn) and np
® \rightarrow
pn charge-exchange processes were proportional to the differential cross-sections of the corresponding reactions. The data were
accumulated by the Delta-Sigma set-up magnetic spectrometer with two sets of multiwire proportional chambers located upstream
and downstream of the momentum analyzing magnet. Inelastic processes were considerably reduced by the additional detectors
surrounding the hydrogen and deuterium targets. The time-of-flight system was applied to identify the detected particles.
The new Rdp data are compared with the existing ones, which were obtained below 1GeV, and with the calculations which were made using
the phenomenological NN amplitude sets.
European Physical Journal A 01/2009; 39(3):267-280. · 2.19 Impact Factor
-
N. S. Borisov,
N. A. Bazhanov,
A. A. Belyaev,
J Broz,
J. Cerny,
Z. Dolezal,
A. N. Fedorov,
G M Gurevich,
M. P. Ivanov,
P. Kodys, [......],
A.B. Lazarev,
F. Lehar,
O. O. Lukhanin,
V N Matafonov,
A. B. Neganov, I L Pisarev,
J. Svejda,
S N Shilov,
Yu A Usov,
I Wilhelm
[show abstract]
[hide abstract]
ABSTRACT: A frozen spin polarized deuteron target cooled by the 3He/4He dilution refrigerator is described. Fully deuterated 1,2-propanediol was used as a target material. Deuteron vector polarization about 40% was obtained for the target in the shape of a cylinder of 2 cm diameter and 6 cm length. The target is intended for a study of 3N interactions at the polarized neutron beam generated by the Van de Graaff accelerator at the Charles University in Prague.
01/2008;
-
V. I. Sharov,
N. G. Anischenko,
V. G. Antonenko,
S. A. Averichev,
L. S. Azhgirey,
V. D. Bartenev,
N. A. Bazhanov,
A. A. Belyaev,
N. A. Blinov,
N. S. Borisov, [......],
L. N. Strunov,
A. L. Svetov,
Yu. A. Usov,
T. Vasiliev,
V. I. Volkov,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New accurate data of the neutron-proton spin-dependent total-cross-section difference Δσ
L(np) at the neutron-beam kinetic energies 1.39, 1.69, 1.89, and 1.99 GeV are presented. In general, these data complete the measurements
of energy dependence of Δσ
L(np) over the Dubna Synchrophasotron energy region. Measurements were carried out at the Synchrophasotron of the Veksler and
Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research. The quasi-monochromatic neutron beam was produced
by breakup of extracted polarized deuterons. The deuteron (and hence neutron) polarization direction was flipped every accelerator
burst. The initial transverse (with respect to beam momentum) neutron polarization was changed to a longitudinal one and longitudinally
polarized neutrons were transmitted through the large proton longitudinally polarized target. The target polarization direction
was inverted after one to two days of measurements. Four different combinations of the beam and target parallel and antiparallel
polarization directions, both oriented along the neutron-beam momentum, were used at each energy. A fast decrease in −Δσ
L(np) with increasing energy above 1.1 GeV and a structure in the energy dependence around 1.8 GeV, first observed from our previous
data, seem to be well revealed. The new results are also compared with model predictions and with phase-shift analysis fits.
The Δσ
L quantities for isosinglet state I = 0, deduced from the measured Δσ
L(np) values and known Δσ
L(pp) data, are also given. The results of the measurements of unpolarized total cross sections σ
0tot(np) at 1.3, 1.4, and 1.5 GeV and σ
0tot(nC) at 1.4 and 1.5 GeV are presented as well. These data were obtained using the same apparatus and high-intensity unpolarized
deuteron beams extracted either from the Synchrophasotron or from the Nuclotron.
Physics of Atomic Nuclei 10/2005; 68(11):1796-1811. · 0.57 Impact Factor
-
V. I. Sharov,
N. G. Anischenko,
V. G. Antonenko,
S. A. Averichev,
L. S. Azhgirey,
V. D. Bartenev,
N. A. Bazhanov,
A. A. Belyaev,
N. A. Blinov,
N. S. Borisov, [......],
L. N. Strunov,
A. L. Svetov,
Yu. A. Usov,
T. Vasiliev,
V. I. Volkov,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New accurate data on the neutron-proton spin-dependent total cross section difference Δσ
L(np) at the neutron beam kinetic energies 1.4, 1.7, 1.9 and 2.0 GeV are presented. A number of physical and methodical results
on investigation of an elasticnp→pn charge exchange process over a few GeV region are also presented. Measurements were carried out at the Synchrophasotron and
Nuclotron of the Veksler and Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research.
Czechoslovak Journal of Physics 12/2004; 55:A289-A305. · 0.42 Impact Factor
-
V. I. Sharov,
N. G. Anischenko,
V. G. Antonenko,
S. A. Averichev,
L. S. Azhgirey,
V. D. Bartenev,
N. A. Bazhanov,
A. A. Belyaev,
N. A. Blinov,
N. S. Borisov, [......],
L. N. Strunov,
A. L. Svetov,
Yu A. Usov,
T. Vasiliev,
V. I. Volkov,
E. I. Vorobiev,
I. P. Yudin,
I. V. Zaitsev,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New accurate results of the neutron-proton spin-dependent total cross section difference
DsL(np)\Delta\sigma_{\mathrm L}(np)
at the neutron beam kinetic energies 1.39, 1.69, 1.89 and 1.99 GeV are presented. Measurements were carried out in 2001 at the Synchrophasotron of the Veksler and Baldin Laboratory of High Energies of the Joint Institute for Nuclear Research. A quasi-monochromatic neutron beam was produced by break-up of extracted polarized deuterons. The deuteron (and hence neutron) polarization direction was flipped every accelerator burst. The vertical neutron polarization direction was rotated onto the neutron beam direction and longitudinally (L) polarized neutrons were transmitted through a large proton L-polarized target. The target polarization vector was inverted after 1-2 days of measurements. The data were recorded for four different combinations of the beam and target parallel and antiparallel polarization directions at each energy. A fast decrease of
DsL(np)\Delta\sigma_{\mathrm L}(np)
with increasing energy above 1.1 GeV was confirmed. The structure in the
DsL(np)\Delta\sigma_{\mathrm L}(np)
energy dependence around 1.8 GeV, first observed from our previous data, seems to be well pronounced. The new results are also compared with model predictions and with phase shift analysis fits. The
DsL\Delta\sigma_{\mathrm L}
quantities for isosinglet state I = 0, deduced from the measured
DsL(np)\Delta\sigma_{\mathrm L}(np)
values and the known
DsL(pp)\Delta\sigma_{\mathrm L}(pp)
data, are also given. The results were completed by the measurements of unpolarized total cross sections
s0tot(np)\sigma_{0\mathrm{tot}}(np)
at 1.3, 1.4 and 1.5 GeV and
s0tot(n\sigma_{0\mathrm{tot}}(n
C) at 1.4 and 1.5 GeV. These data were obtained using the same apparatus and high intensity unpolarized deuteron beams were extracted either from the Synchrophasotron, or from the Nuclotron.
European Physical Journal C 08/2004; 37(1):79-90. · 3.63 Impact Factor
-
[show abstract]
[hide abstract]
ABSTRACT: It is shown that the production of neutrons using a polarized deuteron beam can increase the neutron polarization at the Van
de Graaff of the Charles University. Polarized deuterons are proposed to produce via channelling through a single crystal
nickel foil.
Czechoslovak Journal of Physics 02/2002; 52:C707-C710. · 0.42 Impact Factor
-
C. E. Allgower,
J. Ball,
M. E. Beddo,
J. Bystrický,
P.-A. Chamouard,
M. Combet,
Ph. Demierre,
J.-M. Fontaine,
D. P. Grosnick,
R. Hess, [......],
A. A. Popov,
A. N. Prokofiev,
D. Rapin,
J.-L. Sans,
H. M. Spinka,
A. Teglia,
Yu. A. Usov,
V. V. Vikhrov,
B. Vuaridel,
A. A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: Measurements at 18 beam kinetic energies between 1975 and 2795 MeV and at 795 MeV are reported for the pp elastic scattering spin correlation parameter A00nn=(N,N;0,0)=CNN=ANN. The c.m. angular range is typically 60°-100°. These results are compared to previous data from Saturne II and other accelerators. A search for energy-dependent structure at fixed c.m. angles is performed. Comparisons are made to phase shift analysis and theoretical model predictions of this spin observable.
Phys. Rev. C. 08/2001; 64(3).
-
V. I. Sharov,
B. P. Adiasevich,
N. G. Anischenko,
V. G. Antonenko,
S. A. Averichev,
L. S. Azhgirey,
V. D. Bartenev,
N. A. Bazhanov,
N. A. Blinov,
N. S. Borisov, [......],
A. L. Svetov,
Yu. A. Usov,
V. I. Volkov,
E. I. Vorobiev,
V. P. Yershov,
I. P. Yudin,
I. V. Zaitsev,
S. A. Zaporozhets,
A. A. Zhdanov,
V. N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New data on the spin-dependent np observables measured with quasi-monochromatic polarized neutron beam in the energy region from 1.2 to 3.7 GeV are presented.
Further measurements of np scattering observables using the JINR LHE polarization facility (longitudinal and transverse polarized neutron beams and
a polarized proton target) are discussed. The aim of these studies is to determine the imaginary and real parts of the forward
scattering amplitudes for np and for isospin I=0 systems above 1.1 GeV.
Czechoslovak Journal of Physics 12/2000; 51:A87-A96. · 0.42 Impact Factor
-
C. E. Allgower,
J. Ball,
L. S. Barabash,
P.-Y. Beauvais,
M. E. Beddo,
N. Borisov,
A. Boutefnouchet,
J. Bystrický,
P.-A. Chamouard,
M. Combet, [......],
A. A. Popov,
A. N. Prokofiev,
D. Rapin,
J.-L. Sans,
H. M. Spinka,
Yu. A. Usov,
V. V. Vikhrov,
B. Vuaridel,
C. A. Whitten,
A. A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: Measurements at 19 beam kinetic energies between 1795 and 2235 MeV are reported for the pp elastic scattering spin correlation parameter A00nn=ANN=CNN. The c.m. angular range is typically 60–100°. The measurements were performed at Saturne II with a vertically polarized beam and target (transverse to the beam direction and scattering plane), a magnetic spectrometer and a recoil detector, both instrumented with multiwire proportional chambers, and beam polarimeters. These results are compared to previous data from Saturne II and elsewhere.
Phys. Rev. C. 11/2000; 62(6).
-
V.I. Sharov,
S.A. Zaporozhets,
B.P. Adiasevich,
N.G. Anischenko,
V.G. Antonenko,
L.S. Azhgirey,
V.D. Bartenev,
N.A. Bazhanov,
N.A. Blinov,
N.S. Borisov, [......],
A.Yu. Starikov,
G.D. Stoletov,
L.N. Strunov,
A.L. Svetov,
A.P. Tsvinev,
Yu.A. Usov,
V.I. Volkov,
V.P. Yershov,
A.A. Zhdanov,
V.N. Zhmyrov
[show abstract]
[hide abstract]
ABSTRACT: New results of the neutron-proton spin-dependent total cross section difference at the neutron beam kinetic energies 1.59, 1.79 and 2.20 GeV are presented. Measurements were performed at the Synchrophasotron
of the Laboratory of High Energies of the Joint Institute for Nuclear Research in Dubna. A quasi-monochromatic neutron beam
was produced by break-up of extracted polarized deuterons. Neutrons were transmitted through a large polarized proton target.
Measurements were performed either with a parallel or an antiparallel beam and target polarizations, both oriented along the
beam momentum. The results at the two higher energies were measured with two opposite beam and target polarization directions.
Only one target polarization direction was available at 1.59 GeV. The present measurements agree well with existing data.
A fast decrease of the values with increasing energy above 1.1 GeV was confirmed. The new results are also compared with model predictions and with
phase shift analysis fits. The quantities for isosinglet state I=0, deduced from the measured values and known data, are given.
European Physical Journal C 02/2000; 13(2):255-265. · 3.63 Impact Factor
-
V. I. Sharov,
S. A. Zaporozhets,
N. G. Anischenko,
V. D. Bartenev,
N. A. Blinov,
Yu. T. Borzunov,
Yu. P. Bushuev,
E. V. Chernykh,
S. A. Dolgii,
V. M. Drobin, [......],
V. G. Antonenko,
Yu. P. Polunin,
G. M. Gurevich,
A. A. Kochetkov,
M. S. Nikitina,
A. P. Dzyubak,
A. A. Lukhanin,
G. Durand,
F. Lehar,
A. de Lesquen
[show abstract]
[hide abstract]
ABSTRACT: New results for the np spin-dependent total cross section difference Δσ
p
(np) at neutron beam kinetic energies of 1.59, 1.79 and 2.20 GeV are presented. Measurements of the Δσ
p
(np) energy dependence were carried out at the Synchrophasotron of the Laboratory of High Energies of the Joint Institute for
Nuclear Research in Dubna. The values of Δσ
L
were measured as a difference between the np total cross sections for parallel and antiparallel beam and target polarizations, both oriented along the beam momentum.
A fast decrease of Δσ
p
(np) with increasing energy above 1.1 GeV, as it was first seen from our previous data, was confirmed. The new results are also
compared with model predictions and with the phase shift analysis fits. The Δσ
L
quantities for isosinglet state I=0, deduced from the measured values of Δσ
p
(np) and known Δσ
p
(pp) data, are given.
Czechoslovak Journal of Physics 12/1999; 50:325-330. · 0.42 Impact Factor
-
C.E. Allgower,
M.E. Beddo,
D.P. Grosnick,
T.E. Kasprzyk,
D. Lopiano,
H.M. Spinka,
J. Ball,
P. Beauvais,
Y. Bedfer,
P. Chamouard, [......],
V. Ghazikhanian,
C.A. Whitten,
P. Demierre,
R. Hess,
Z.F. Janout,
D. Rapin,
B. Vuaridel,
A.N. Prokofiev,
V.V. Vikhrov,
A.A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: Experimental results are presented for the pp elastic-scattering single spin observable A{sub oono}=A{sub ooon}=A{sub N}=P, or the analyzing power, at 19 beam kinetic energies between 1795 and 2235 MeV. The typical c.m. angular range is 60{endash}100{degree}. The measurements were performed at Saturne II with a vertically polarized beam and target (transverse to the beam direction and scattering plane), a magnetic spectrometer and a recoil detector, both instrumented with multiwire proportional chambers, and beam polarimeters. {copyright} {ital 1999} {ital The American Physical Society}
Physical Review, C. 10/1999; 60(5).
-
J. Ball,
C.E. Allgower,
M. Beddo,
J. Bystrický,
M. Combet,
Ph. Demierre,
G. Durand,
J.-M. Fontaine,
D. Grosnick,
R. Hess, [......], I.L. Pisarev,
A.A. Popov,
A.N. Prokofiev,
D. Rapin,
J.-L. Sans,
H.M. Spinka,
Yu.A. Usov,
V.V. Vikhrov,
B. Vuaridel,
A.A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: A polarized proton beam extracted from SATURNE II, the Saclay polarized target with Li compounds, and a target were used to measure elastic and quasi-elastic pp spin-dependent observables in the angular region . The beam and/or target polarizations were oriented vertically. Accurate pp data for the analyzing power , spin-correlation parameter , and the polarization transfer were measured at 1.1 GeV. The observables and were determined at six other energies between 1.6 and 2.4 GeV. At 1.6 GeV, was also obtained. The individual contributions from H, Li, and LiD were deduced. The target provided results on free hydrogen and on protons in carbon. The elastic and quasi-elastic observables are compared with existing data
and with phase-shift analysis predictions.
European Physical Journal C 10/1999; 11(1):51-67. · 3.63 Impact Factor
-
A. de Lesquen,
C.E. Allgower,
J. Ball,
M. Beddo,
J. Bystrický,
M. Combet,
Ph. Demierre,
G. Durand,
J.-M. Fontaine,
D. Grosnick, [......], I.L. Pisarev,
A.A. Popov,
A.N. Prokofiev,
D. Rapin,
J.-L. Sans,
H.M. Spinka,
Yu.A. Usov,
V.V. Vikhrov,
B. Vuaridel,
A.A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: A polarized proton beam from SATURNE II, the Saclay polarized targets with Li compounds, and an unpolarized target were used to measure spin-dependent observables for protons scattered on bound nucleons. The beam and target polarizations
were oriented vertically. The analyzing power and the depolarization were determined at seven energies between 1.1 and 2.4 GeV. The spin correlation parameter was measured at only 1.1 and 1.6 GeV. Measurements with the target at 1.1 GeV provided data for scattering of polarized protons on neutrons in carbon. The quasi-elastic observables are compared with previous
elastic scattering measurements and at 1.1 GeV with predictions of phase shift analyses.
European Physical Journal C 10/1999; 11(1):69-78. · 3.63 Impact Factor
-
C. E. Allgower,
J. Ball,
M. E. Beddo,
J. Bystrický,
P.-A. Chamouard,
M. Combet,
Ph. Demierre,
J.-M. Fontaine,
D. P. Grosnick,
R. Hess, [......],
A. A. Popov,
A. N. Prokofiev,
D. Rapin,
J.-L. Sans,
H. M. Spinka,
A. Teglia,
Yu. A. Usov,
V. V. Vikhrov,
B. Vuaridel,
A. A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: Measurements at 18 beam kinetic energies between 1975 and 2795 MeV and at 795 MeV are reported for the pp elastic-scattering single spin parameter Aooon=Aoono=AN=P. The c.m. angular range is typically 60–100°. These results are compared to previous data from Saturne II and other accelerators. A search for energy-dependent structure at fixed c.m. angles is performed, but no rapid changes are observed.
Phys. Rev. C. 10/1999; 60(5).
-
C. E. Allgower,
J. Ball,
L. S. Barabash,
P.-Y. Beauvais,
M. E. Beddo,
Y. Bedfer,
N. Borisov,
A. Boutefnouchet,
J. Bystrický,
P.-A. Chamouard, [......],
A. A. Popov,
A. N. Prokofiev,
D. Rapin,
J.-L. Sans,
H. M. Spinka,
Yu. A. Usov,
V. V. Vikhrov,
B. Vuaridel,
C. A. Whitten,
A. A. Zhdanov
[show abstract]
[hide abstract]
ABSTRACT: Experimental results are presented for the pp elastic-scattering single spin observable Aoono=Aooon=AN=P, or the analyzing power, at 19 beam kinetic energies between 1795 and 2235 MeV. The typical c.m. angular range is 60–100°. The measurements were performed at Saturne II with a vertically polarized beam and target (transverse to the beam direction and scattering plane), a magnetic spectrometer and a recoil detector, both instrumented with multiwire proportional chambers, and beam polarimeters.
Phys. Rev. C. 10/1999; 60(5).
-
A. N. Prokofiev,
C. E. Allgower,
L. S. Azhgirej,
J. Ball,
M. Beddo,
Y. Bedfer,
A. Boutefnouchet,
J. Bystricky,
Ph. Demierre,
J. -M. Fontaine, [......],
D. Rapin,
J. -L. Sans,
H. M. Spinka,
G. D. Stoletov,
S. Trentalange,
Yu. A. Usov,
V. V. Vikhrov,
B. Vuaridel,
C. A. Whitten,
A. A. Zhdanov
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ABSTRACT: Method and results of the beam polarization measurements are presented. The measurements were carried out at the proton polarized
beam of Saturne-II accelerator as well as at the JINR (Dubna) synchrophasotron vector polarized deuteron beam. The analysis of the elastic (quasi-elastic)
pp-scattering polarization is used as a method of the polarization measurements. The energy range of the measurement is 1.0≤T
p
≤2.8 GeV for polarized proton and 1.66≤T
d
≤7.3 GeV for polarized deuteron beams.
Czechoslovak Journal of Physics 01/1999; 49:29-36. · 0.42 Impact Factor
