Abstract
We have compared the results of dynamical modeling of the fission process with predictions of the Kramers formulas. For the case of large dissipation, there are two of them: the integral rate RI and its approximation RO. As the ratio of the fission barrier height Bf to the temperature T reaches 4, any analytical rate is expected to agree with the dynamical quasistationary rate RD within 2%. The latter has been obtained using numerical modeling with six different potentials. It has been found that the difference between RO and RD sometimes exceeds 20%. The features of the potentials used that are responsible for this disagreement are identified and studied. It is demonstrated that it is R I, not RO, that meets this expectation regardless of the potential used.
| Original language | English |
|---|---|
| Article number | 064606 |
| Journal | Physical Review C - Nuclear Physics |
| Volume | 82 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 21 Dec 2010 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Disentangling effects of potential shape in the fission rate of heated nuclei. / Gontchar, I. I.; Chushnyakova, Maria Vladimirovna; Aktaev, N. E.; Litnevsky, A. L.; Pavlova, E. G.
In: Physical Review C - Nuclear Physics, Vol. 82, No. 6, 064606, 21.12.2010.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Disentangling effects of potential shape in the fission rate of heated nuclei
AU - Gontchar, I. I.
AU - Chushnyakova, Maria Vladimirovna
AU - Aktaev, N. E.
AU - Litnevsky, A. L.
AU - Pavlova, E. G.
PY - 2010/12/21
Y1 - 2010/12/21
N2 - We have compared the results of dynamical modeling of the fission process with predictions of the Kramers formulas. For the case of large dissipation, there are two of them: the integral rate RI and its approximation RO. As the ratio of the fission barrier height Bf to the temperature T reaches 4, any analytical rate is expected to agree with the dynamical quasistationary rate RD within 2%. The latter has been obtained using numerical modeling with six different potentials. It has been found that the difference between RO and RD sometimes exceeds 20%. The features of the potentials used that are responsible for this disagreement are identified and studied. It is demonstrated that it is R I, not RO, that meets this expectation regardless of the potential used.
AB - We have compared the results of dynamical modeling of the fission process with predictions of the Kramers formulas. For the case of large dissipation, there are two of them: the integral rate RI and its approximation RO. As the ratio of the fission barrier height Bf to the temperature T reaches 4, any analytical rate is expected to agree with the dynamical quasistationary rate RD within 2%. The latter has been obtained using numerical modeling with six different potentials. It has been found that the difference between RO and RD sometimes exceeds 20%. The features of the potentials used that are responsible for this disagreement are identified and studied. It is demonstrated that it is R I, not RO, that meets this expectation regardless of the potential used.
UR - http://www.scopus.com/inward/record.url?scp=79251572632&partnerID=8YFLogxK
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U2 - 10.1103/PhysRevC.82.064606
DO - 10.1103/PhysRevC.82.064606
M3 - Article
VL - 82
JO - Physical Review C
JF - Physical Review C
SN - 0556-2813
IS - 6
M1 - 064606
ER -