Probing the sustainability of the N=82 and Z=50 shell closures for neutron-rich nuclides:
نویسندگان
چکیده
Decay of Rh75 to levels of Pd74 W. B. Walters, B. E. Tomlin, P. F. Mantica, B. A. Brown, J. Rikovska Stone, A. D. Davies, A. Estrade, P. T. Hosmer, N. Hoteling, S. N. Liddick, T. J. Mertzimekis, F. Montes, A. C. Morton, W. F. Mueller, M. Ouellette, E. Pellegrini, P. Santi, D. Seweryniak, H. Schatz, J. Shergur, and A. Stolz Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA Department of Physics, Oxford University, Oxford, UK OXI 3PU United Kingdom Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, Michigan 48824, USA Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA (Received 9 June 2004; published 28 September 2004)
منابع مشابه
Isospin dependence in the odd-even staggering of nuclear binding energies.
The FRS-ESR facility at GSI provides unique conditions for precision measurements of large areas on the nuclear mass surface in a single experiment. Values for masses of 604 neutron-deficient nuclides (30 < or = Z < or = 92) were obtained with a typical uncertainty of 30 microu. The masses of 114 nuclides were determined for the first time. The odd-even staggering (OES) of nuclear masses was sy...
متن کامل] 2 0 Ju n 20 07 Low - energy Dipole Excitations in Nuclei at the N = 50 , 82 and Z = 50 Shell Closures as Signatures for a Neutron Skin
Abstract. Low-energy dipole excitations have been investigated theoretically in N=50 Sr and Zr, several N=82 isotones and the Z = 50 Sn isotopes. For this purpose a method incorporating both HFB and multi-phonon QPM theory is applied. A concentration of one-phonon dipole strength located below the neutron emission threshold has been calculated in these nuclei. The analysis of the corresponding ...
متن کاملIsomers in neutron - rich lead isotopes populated via the fragmentation of 238 U at 1 GeV A
Neutron-rich nuclei beyond N = 126 in the lead region were populated by fragmenting a U beam at 1 GeV A on a Be target and then separated by the Fragment Separator (FRS) at GSI. Their isomeric decays were observed, enabling study of the shell structure of neutron-rich nuclei around the Z=82 shell closure. Some preliminary results are reported in this paper.
متن کاملNew evidence for a subshell gap at N = 32
An 879.9(2) keV γ -ray transition has been identified following the β decay of 58V and assigned as the 21 → 01 transition in Cr34. A peak in the energies of the first excited 2 + states for the even–even chromium isotopes is now evident at Cr32, providing empirical evidence for a significant subshell gap at N = 32. The appearance of this neutron subshell closure for neutron-rich nuclides may be...
متن کاملSuperheavy nuclei in relativistic effective Lagrangian model
Isotopic and isotonic chains of superheavy nuclei are analyzed to search for spherical double shell closures beyond Z = 82 and N = 126 within the new effective field theory model of Furnstahl, Serot, and Tang for the relativistic nuclear many-body problem. We take into account several indicators to identify the occurrence of possible shell closures, such as two-nucleon separation energies, two-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2004