Effects of N/Z on survival probability of heavy nuclei

被引：0

作者：

Ye Wei ^{[1
]}

Yang Hong-Wei ^{[1
]}

机构：

[1] Southeast Univ, Dept Phys, Nanjing 210096, Peoples R China

来源：

CHINESE PHYSICS C | 2008年 / 32卷 / 01期

关键词：

N/Z effect; survival probability; pre-saddle particle multiplicity; Langevin equation;

D O I：

10.1088/1674-1137/32/1/011

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 excitation functions of the evaporation residue formation probability of three heavy nuclei Pb-194, Pb-200 and Pb-206 are calculated by using a Langevin equation coupled with a statistical decay model. The results show that the neutron-to-proton ratio (N/Z) of a compound nucleus has an effect on survival probability and this effect becomes larger with increasing N/Z. This is because the fission barrier and the pre-saddle particle emission depend on the N/Z ratio of the system.

引用

页码：49 / 51

页数：3

共 14 条

[1] Fission hindrance in hot 216Th:: Evaporation residue measurements -: art. no. 044602 [J].

Back, BB ;

Blumenthal, DJ ;

Davids, CN ;

Henderson, DJ ;

Hermann, R ;

Hofman, DJ ;

Jiang, CL ;

Penttilä, HT ;

Wuosmaa, AH .

PHYSICAL REVIEW C, 1999, 60 (04) :7

[2] DECAY OF DEFORMED AND SUPER-DEFORMED NUCLEI FORMED IN HEAVY-ION REACTIONS [J].

BLANN, M .

PHYSICAL REVIEW C, 1980, 21 (05) :1770-1782

[3] Nuclear viscosity of hot rotating 224Th -: art. no. 024613 [J].

Diószegi, I ;

Shaw, NP ;

Mazumdar, I ;

Hatzikoutelis, A ;

Paul, P .

PHYSICAL REVIEW C, 2000, 61 (02) :246131-2461317

[4] Langevin description of fusion, deep-inelastic collisions and heavy-ion-induced fission [J].

Fröbrich, P ;

Gontchar, II .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1998, 292 (3-4) :131-237

[5] WHAT ARE SENSITIVE PROBES FOR NUCLEAR FRICTION IN HEAVY-ION-INDUCED FISSION [J].

FROBRICH, P ;

GONTCHAR, II .

NUCLEAR PHYSICS A, 1993, 563 (02) :326-348

[6] DYNAMICS OF NUCLEAR-FISSION [J].

HILSCHER, D ;

ROSSNER, H .

ANNALES DE PHYSIQUE, 1992, 17 (06) :471-552

[7]

IGNATYUK AV, 1975, SOV J NUCL PHYS+, V21, P612

[8] Transient effects in fission from new experimental signatures [J].

Jurado, B ;

Schmitt, C ;

Schmidt, KH ;

Benlliure, J ;

Enqvist, T ;

Junghans, AR ;

Kelic, A ;

Rejmund, F .

PHYSICAL REVIEW LETTERS, 2004, 93 (07) :072501-1

[9] Shell corrections at the saddle point for mass ∼200 [J].

Mahata, K. ;

Kailas, S. ;

Kapoor, S. S. .

PHYSICAL REVIEW C, 2006, 74 (04)

[10]

MYERS WD, 1967, ARK FYS, V36, P343

← 1 2 →