J. Kormicki’s research while affiliated with Oak Rise Institution for Science & Education and other places

... This is the first time this mode is observed in Ce-Zr pairs; it is ∼1.0(3)% of the first mode. The observation of this mode in this pair can be explained when one considers that 143−145 Ba and 146,148 Ce have been determined to be octupole deformed [29,30,[33][34][35] and may also have hyperdeformation at scission to give these nuclei high internal energy and in turn gives rise to high neutron multiplicities. The second curve (6-10 neutrons) in Fig 4 was fitted by restricting the width of the second curve to the width of the first curve (0-7 neutron channels) and the position to 8 neutron channel. ...

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Anomalous Neutron Yields Confirmed for Ba-Mo and Newly Observed for Ce-Zr from Spontaneous Fission of $^{252}$Cf

... One should mention that the 117 keV peak is slightly contaminated with the 117 keV ground state transition of 143 Ba. However, with regard to figure 3.5 its contribution was not included for correction since the 0n-channel is only weakly populated as can be estimated from the intensity ratios for the barium transitions 117 keV and 343 keV of R (Iγ (117)/Iγ (343) =0.05 as it was measured in spontaneous fission of 252 Cf and 248 Cm [72]. With a centroid shift difference of ∆C = 1695(100) ps, a ∆C Compton = 1104(100) ps, a PRD = -111(10) ps and a peak-to-background ratio P/BG = 0.51(5) the mean lifetime calculates with eq. ...

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Nuclear structure studies with neutron-induced reactions : fission fragments in the N=50-60 region, a fission tagger for FIPPS, and production of the isomer Pt-195m

... The same approach applied to 184 Hg leads to the two-ordersof-magnitude higher value than the experimental result [19]. For 186 Hg the method used to extract the lifetime of the 0 + 2 state [59] suffers from unaccounted systematic effects. As shown in Ref. [60] and discussed in details in Sec. ...

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Simultaneous γ -ray and electron spectroscopy of Hg 182 , 184 , 186 isotopes

... One problem is the difficulty of realizing an optical cavity since, at high photon energies, reflectors (even grazing angle units) are difficult to realize. One proposed solution involved travelling wave pumping by laser compression (Baldwin and Khokhlov 1975) to achieve 10 5 times the solid state density (Hora 1975(Hora , 1976 at which the subsequent flux density of ~ 10 26 a-particlescm-2 S-1 from H llB reactions could be used for graser excitation (Hora 1974). The present paper discusses a new scheme aimed at achieving highly directed emission of grasers with low beam divergences, and also discusses controlled switching of the graser action. ...

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A Discussion of Laser Conditions and the Use of Polarized Nuclei in Grasers

... From experiment, limited stucture information was known compared to other regions due to difficulties to populate the neutron-rich isotopes. Previous experimental studies show energies of the 2 + levels have a local minimum at N = 98 [3,4]. This fact is in contrast with the theoretical calculations for deformation maximum at N = 104 midshell [5]. ...

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Long-lived isomeric states and quasiparticle band structures in neutron-rich Gd 162 , 164 nuclei from β decay

... The experimental relative yields, as well as the preformation probability calculated using the phenomenological formula given by Eqs. (20) and (21) for collinear and equatorial configurations respectively, are also reported. ...

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Hindrance in the preformation probability of the light third particle in collinear ternary fission channels (Revised)

... We compare our findings with the existing theoretical/experimental constraints. In the left panel of FIG. 1, the yellow region in the upper left corner is excluded by the GR constraint R > 2GM/c 2 and the green one is excluded by causality condition, R > 3GM/c 2[85,86]. Furthermore, we include the bounds on the mass and the radius obtained from the 2019 NICER data. ...

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Constraints on scalar and vector dark matter admixed neutron stars with linear and quadratic couplings

... Accordingly, to some extent, the range of fissioning nuclei for LRA emission studies was constrained in terms of Z and A. The experimental data measured at higher excitation energies (e.g., >12 MeV), however, could be effected by the complex de-excitation process of the compound nucleus such as a multi-chance fission [25,26]. The most comprehensively studied cases of LRA emissions are 238,240,242,244 Pu [17,20], 242,244,246,248 Cm [19,21], 250,252 Cf [19,23,[27][28][29][30] and 256,257 Fm [16]. These data, acquired from both spontaneous and thermalneutron-induced fission, where the excitation energy does not exceed ≈7 MeV, represent the most recent and valuable experimental source for elucidating the empirical features of the LRA emission process. ...

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Ternary fission with the emission of long-range $\alpha$ particles in fission of the heaviest nuclei

... The cell duplicates its contents, including its nucleus and other organelles and then splits into two cells with each one being identical. (Bacteria, amoeba, algae ) (Ramayya et al., 2001). In Asexual Spore Production, spores are similar to seeds, but are produced by the division of cells on the parent, not by the union of two cells. ...

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ARO: A new model free optimization algorithm for real time applications inspired by the asexual reproduction

... Also, as already mentioned in the Introduction, the interpretation of the available information about rotational bands of neutron-rich Rh isotopes and nuclides in adjacent isotopic chains [15][16][17][84][85][86][87][88] consistently requires the assumption of triaxial shapes within the various approaches used to model them. ...

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Odd-odd neutron-rich rhodium isotopes studied with the double Penning trap JYFLTRAP