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V. V. Simon,
T. Brunner,
U. Chowdhury, B. Eberhardt,
S. Ettenauer,
A. T. Gallant,
E. Mané,
M. C. Simon,
P. Delheij,
M. R. Pearson,
G. Audi,
G. Gwinner,
D. Lunney,
H. Schatz,
J. Dilling
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ABSTRACT: The neutron-rich mass region around A≈100 presents challenges for modeling the astrophysical r process because of rapid shape transitions. We report on mass measurements using the TITAN Penning trap at TRIUMF-ISAC to attain more reliable theoretical predictions of r-process nucleosynthesis paths in this region. A new approach using highly charged (q=15+) ions has been applied which considerably saves measurement time and preserves accuracy. New mass measurements of neutron-rich 94,97,98Rb and 94,97–99Sr have uncertainties of less than 4 keV and show deviations of up to 11σ when compared to previous measurements. An analysis using a parameterized r-process model is performed and shows that mass uncertainties for the A=90 abundance region are eliminated.
Phys. Rev. C. 06/2012; 85(6).
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M C Simon,
J C Bale,
U Chowdhury, B Eberhardt,
S Ettenauer,
A T Gallant,
F Jang,
A Lennarz,
M Luichtl,
T Ma, [......],
D Frekers,
A Grossheim,
G Gwinner,
A A Kwiatkowski,
A Lapierre,
E Mané,
M R Pearson,
R Ringle,
B E Schultz,
J Dilling
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ABSTRACT: TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN) constitutes the only high precision mass measurement setup coupled to a rare isotope facility capable of increasing the charge state of short-lived nuclides prior to the actual mass determination in a Penning trap. Recent developments around TITAN's charge breeder, the electron beam ion trap, form the basis for several successful experiments on radioactive isotopes with half-lives as low as 65 ms and in charge states as high as 22+.
The Review of scientific instruments 02/2012; 83(2):02A912. · 1.52 Impact Factor
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ABSTRACT: The TITAN on-line ion trapping facility at TRIUMF is dedicated to precision experiments with short-lived radioactive isotopes, among them mass measurements. A new approach is to breed the ions into high charge states using an electron-beam ion trap. To counter any increases in energy spread caused by charge breeding, a cooler Penning trap is being developed. Sympathetic cooling mechanisms utilizing electrons and initially cold protons will be investigated. Details of the setup as well as the current status are reported.
Journal of Physics Conference Series 09/2011; 312(5):052024.
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ABSTRACT: Azure B-eosin APAAP staining allows simultaneous analysis of peripheral blood and bone marrow cells for hematological characteristics and immunological cell marker profiles. A defined sequence of staining procedures maintains characteristic components of the Romanowsky-Giemsa stain whereas cell antigens can be detected immunologically using the alkaline phosphatase-anti-alkaline phosphatase (APAAP) detection system. Antigens are visualized by the staining product of the substrate-naphthol AS GR phosphate and variamine blue salt. The usefulness of the azure B-eosin APAAP method was demonstrated on blood and bone marrow smears of patients with various hematological disorders.
Biotechnic and Histochemistry 10/1995; 70(5):267-70. · 1.10 Impact Factor
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I Strohscheer,
R Kleinert,
C. Westphal,
J Schüller,
K. Werner,
O Anders,
H Wandt,
U. Poppy,
K Matthes,
M Kuliszkiewicz-Janus, [......],
G Schneider,
D. M. Rozynkowa,
H Kasparu,
G Gastl,
N Schwella,
H Wachter,
K Gabryś,
S Kleiner,
D Jakschies,
J Krauter
