NRV: Decay of excited nuclei

Quantity to calculate: Decay widths Survival Probability
Nucleus     Spin  L, h
Eexcitation, MeV min max points
Default parameters
Decay properties 1 1 1 1
g.s. deformation β2
g.s. shell correction δE
g.s. mass excess δM
saddle point β2
fission barrier Bfiss  
Level-density parameter:

α β γ
Collective enhancement of level density
Kcoll=Krot(E)·φ(β2)+Evib(E)·(1-φ(β2))  [3]
Kcoll=Krot(E) (deformed nuclei case)
Kcoll=Kvib(E) (spherical nuclei case)
Deformation dependence of collective enhancement
β20
Δβ2
Energy dependence of collective enhancement
Ecr MeV
ΔEcr MeV
Krot= ·
Kvib=exp( A2/3T4/3)  [4]
Kvib= ·βeff2·  [5]
βeff= + ΔN + ΔZ
ΔN (ΔZ) are the absolute values of the numbers of neutrons (protons) above or below nearest shell closure
Monte-Carlo simulation (all possible channels)
Multifold integration (1n-4n channels)

[1] - P. Möller, et al., Atomic Data and Nucleur Data Tables, 1995, vol.59, p.185
[2] - A.V. Ignatyuk, et al., Sov. J. Nucl. Phys., 1975, vol.21, p.612; ibid., p.255
[3] - V.I. Zagrebaev, et al., Phys. Rev., 2001, vol.C65, p.014607
[4] - A.V. Ignatyuk, The statistical properties of the excited atomic nuclei
(Energoatomizdat, Moscow, 1983)
[5] - A.R. Junghans, et al., Nucl. Phys., 1998, vol.A629, p.635