Shell Effects on Nuclear Level Densities

1972 ◽  
Vol 5 (3) ◽  
pp. 1124-1126 ◽  
Author(s):  
V. S. Ramamurthy ◽  
S. K. Kataria ◽  
S. S. Kapoor
Keyword(s):  
Nuclear Level ◽  
Level Densities ◽  
Shell Effects

A study of the influence of shell effects in nuclear level densities on the decay of the compound nucleus58Ni

1979 ◽  
Vol 290 (2) ◽  
pp. 167-172 ◽  
Author(s):  
F. Busch ◽  
M. J. Canty ◽  
W. Pfeffer ◽  
B. Kohlmeyer ◽  
W. Sch�fer ◽  
...  
Keyword(s):  
Nuclear Level ◽  
Level Densities ◽  
Shell Effects

scholarly journals Nuclear level densities away from line of β-stability

2021 ◽  
Author(s):  
Tanmoy Ghosh ◽  
Bhoomika Maheshwari ◽  
Sangeeta Arora ◽  
Gaurav Saxena ◽  
Bijay Agrawal
Keyword(s):  
Single Particle ◽  
Level Density ◽  
Mass Range ◽  
Density Parameter ◽  
Structural Effects ◽  
Mass Model ◽  
Nuclear Level ◽  
Level Densities ◽  
Shell Effects ◽  
Order Of Magnitude

Abstract The variation of total nuclear level densities (NLDs) and level density parameters with proton number Z are studied around the β-stable isotope, Z0, for a given mass number. We perform our analysis for a mass range A=40 to 180 using the NLDs from popularly used databases obtained with the single-particle energies from two different microsopic mass-models. These NLDs which include microscopic structural effects such as collective enhancement, pairing and shell corrections, do not exhibit inverted parabolic trend with a strong peak at Z0 as predicted earlier. We also compute the NLDs using the single-particle energies from macroscopic-microscopic mass-model. Once the collective and pairing effects are ignored, the inverted parabolic trends of NLDs and the corresponding level density parameters become somewhat visible. Nevertheless, the factor that governs the (Z-Z0) dependence of the level density parameter, leading to the inverted parabolic trend, is found to be smaller by an order of magnitude. We further find that the (Z-Z0) dependence of NLDs is quite sensitive to the shell effects.

scholarly journals Microscopic calculation of symmetry projected nuclear level densities

2009 ◽  
Vol 79 (2) ◽  
Author(s):  
K. Van Houcke ◽  
S. M. A. Rombouts ◽  
K. Heyde ◽  
Y. Alhassid
Keyword(s):  
Nuclear Level ◽  
Level Densities ◽  
Microscopic Calculation

scholarly journals Level studies of 73As via 73Ge(p, nγ)73As reaction and density of discrete levels in 73As

2009 ◽  
Vol 24 (2) ◽  
pp. 82-85 ◽  
Author(s):  
Aziz Behkami ◽  
Rohallah Razavi ◽  
Tayeb Kakavand
Keyword(s):  
Proton Beam ◽  
Excited States ◽  
Level Scheme ◽  
Level Density ◽  
Fermi Gas ◽  
Temperature Model ◽  
Nuclear Level Density ◽  
Nuclear Level ◽  
Level Densities ◽  
Experimental Level

The excited states of 73As have been investigated via the 73Ge(p, n?)73As reaction with the proton beam energies from 2.5-4.3 MeV. The parameters of the nuclear level density formula have been determined from the extensive and complete level scheme for 73As. The Bethe formula for the back-shifted Fermi gas model and the constant temperature model are compared with the experimental level densities.

Latest development of the combinatorial model of nuclear level densities

2011 ◽  
Author(s):  
S. Goriely ◽  
S. Hilaire ◽  
M. Girod ◽  
Paraskevi Demetriou ◽  
Rauno Julin ◽  
...  
Keyword(s):  
Nuclear Level ◽  
Level Densities ◽  
Combinatorial Model
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