Electrofission of Pu-239 in the energy range 7-12 MeV

被引：5
作者：
ArrudaNeto, JDT
Yoneama, ML
Dias, JF
Garcia, F
Reigota, MAV
Likhachev, VP
Guzman, F
Rodriguez, O
Mesa, J
机构：
[1] INST SUPTER CIENCIA & TECNOL NUCL, HAVANA, CUBA
[2] UFRGS, INST FIS, PORTO ALEGRE, RS, BRAZIL
[3] ISCTN, HAVANA, CUBA
来源：
PHYSICAL REVIEW C | 1997年 / 55卷 / 05期
关键词：
D O I：
10.1103/PhysRevC.55.2471
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The electrofission cross section of Pu-239(e,f) is measured between 7 and 12 MeV. The data are analyzed by means of the virtual photon formalism, assuming that E1, E2 (T = 0), and M1 transitions are involved. Using known estimates for the E1 and E2 (T = 0) fission strengths, it is deduced an M1 fission strength of 19 +/- 4 mu(N)(2) concentrated near the fission barrier (between 5.4 and 5.8 MeV). The levels of the Pu-239 transition nucleus are theoretically obtained; a bunch of positive-parity levels shows up between 5.5 and 5.9 MeV, which might well be associated with the deduced M1 strength, since the E2 strength is negligible in this energy interval.
引用
收藏
页码：2471 / 2481
页数：11
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