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High spin states in $^{59}$Co ($Z=27$), $^{59}$Ni ($Z=28$) and $^{61}$Co have been populated by the fusion evaporation reactions, $^{48}$Ti($^{14}$C, p2n)$^{59}$Co, $^{48}$Ti($^{14}$C, 3n)$^{59}$Ni, and $^{50}$Ti($^{14}$C, p2n)$^{61}$Co.…

We perform a systematic shell-model and mean-field study of fully-aligned, high-spin f_{7/2}^{n} seniority isomers and d_{3/2}^{-1} f_{7/2}^{n+1} intruder states in the A~44 nuclei from the lower-fp shell. The shell-model calculations are…

Nuclear Theory · Physics 2009-11-11 G. Stoitcheva , W. Satula , W. Nazarewicz , D. J. Dean , M. Zalewski , H. Zdunczuk

The isomeric and {\beta} decays of the N = Z +2 nucleus 96Ag were investigated at NSCL. A cascade of {\gamma}-ray transitions originating from the de-excitation of a {\mu}s isomer was observed for the first time and was found in coincidence…

The structure of the particle-hole nucleus 132Sb provides a direct source of information on the effective neutron-proton interaction in the 132Sn region. We have performed a shell-model calculation for this nucleus using a realistic…

Nuclear Theory · Physics 2009-10-31 F. Andreozzi , L. Coraggio , A. Covello , A. Gargano , T. T. S. Kuo , A. Porrino

A study is carried out of the role of the aligned neutron-proton pair with angular momentum J=9 and isospin T=0 in the low-energy spectroscopy of the $N=Z$ nuclei $^{96}$Cd, $^{94}$Ag, and $^{92}$Pd. Shell-model wave functions resulting…

Nuclear Experiment · Physics 2011-07-04 S. Zerguine , P. Van Isacker

Proton elastic scattering off Sn isotopes at $E_p=295$ MeV in the mass number range of $A=$116--124 was investigated using calculation employing relativistic impulse approximation (RIA) with theoretical densities obtained for the Sn…

Nuclear Theory · Physics 2021-06-03 Yoshiko Kanada-En'yo

The high-spin states in odd-odd $^{194}$Tl nucleus have been studied by populating them using the $^{185,187}$Re($^{13}$C, xn) reactions at 75 MeV of beam energy. $\gamma-\gamma$ coincidence measurement has been performed using the INGA…

The polarization of the secondary protons (P1,2) in the (p,2p) reaction with the S - shell protons of nuclei 4He, 6Li, 12C, 28Si, 40Ca was measured at 1 GeV unpolarized proton beam. The spin correlation parameters Cij for the 4He and 12C…

A $\gamma\gamma$ angular correlation experiment has been performed to investigate the low-energy states of the nucleus $^{98}$Mo. The new data, including spin assignments, multipole mixing ratios and lifetimes reveal evidence for shape…

Nuclear Experiment · Physics 2013-10-24 T. Thomas , K. Nomura , V. Werner , T. Ahn , N. Cooper , H. Duckwitz , M. Hinton , G. Ilie , J. Jolie , P. Petkov , D. Radeck

We have performed shell-model calculations for nuclei with proton particles and neutron holes around 132Sn using a realistic effective interaction derived from the CD-Bonn nucleon-nucleon potential. For the proton-neutron channel this is…

Nuclear Theory · Physics 2009-11-07 L. Coraggio , A. Covello , A. Gargano , N. Itaco , T. T. S. Kuo

The $^{18}$Ne($\alpha$,$p$)$^{21}$Na reaction provides a pathway for breakout from the hot CNO cycles to the $rp$-process in type I x-ray bursts. To better determine this astrophysical reaction rate, the resonance parameters of the compound…

We present recent results on the structure of the one-valence-particle $^{41}$Ca and $^{49}$Ca, and one-valence-hole $^{47}$Ca, nuclei. The isotopes of interest were populated via the cold-neutron capture reactions $^{40}$Ca(n,$\gamma$),…

This Letter presents the first experimental evidence of the attractive strong interaction between a proton and a $\phi$ meson. The result is obtained from two-particle correlations of combined p-$\phi \oplus \overline{\rm {p}}$-$\phi$ pairs…

Nuclear Experiment · Physics 2021-12-17 ALICE Collaboration

Fragment-fragment-$\gamma$ triple coincident measurements of the $^{28}$Si + $^{28}$Si reaction at E$_{lab.}$ = 111.6 MeV carefully chosen to populate J = 38$^{+}$ resonance have been performed at the VIVITRON tandem facility by using…

Nuclear Experiment · Physics 2007-05-23 R. Nouicer , C. Beck , S. J. Sanders , A. Szanto de Toledo , Sl. Cavallaro

Fragment-fragment-$\gamma$ triple coincidence measurements of the $^{28}$Si~$+$~$^{28}$Si reaction at E$_{\rm c.m.}$~=~55.8 MeV, carefully chosen to populate a well known quasi-molecular resonance in $^{56}$Ni, have been performed at the…

Nuclear Experiment · Physics 2007-05-23 R. Nouicer , C. Beck , S. J. Sanders , A. Szanto de Toledo , Sl. Cavallaro , E. Uegaki , Y. Abe

The nuclear shell model is one of the successful models in theoretical understanding of nuclear structure. If a convenient effective interaction can be found between nucleons, various observables such as energies of nuclear states are…

Nuclear Theory · Physics 2020-01-24 Serkan Akkoyun , Nadjet Laouet , Fatima Benrachi

Weak interaction rates and the associated energy losses for massive nuclei in the fp-shell are calculated in stellar matter using a modified form of proton-neutron quasiparticle RPA model with separable Gamow-Teller forces. A total of 209…

Nuclear Theory · Physics 2007-05-23 J. -U. Nabi , H. V. Klapdor-Kleingrothaus

We investigated the evolution of shell structure at $N=32$ and 34 in neutron-rich nuclei beyond the stability line using realistic nuclear forces, employing the state-of-the-art valence-space in-medium similarity renormalization group…

Nuclear Theory · Physics 2025-08-06 Subhrajit Sahoo , Praveen C. Srivastava

A search for new physics in top quark production is performed in proton-proton collisions at 13 TeV. The data set corresponds to an integrated luminosity of 35.9 fb$^{-1}$ collected in 2016 with the CMS detector. Events with two…

High Energy Physics - Experiment · Physics 2020-05-22 CMS Collaboration

The recently observed two high-spin rotational bands in the proton emitter $^{113}$Cs are investigated using the cranked shell model with pairing correlations treated by a particle-number conserving method, in which the Pauli blocking…

Nuclear Theory · Physics 2017-04-05 Zhen-Hua Zhang , Peng Xu