LIGHT PARTICLE-EMISSION IN BOLTZMANN MASTER EQUATION THEORY OF PREEQUILIBRIUM REACTIONS

被引：33

作者：

CERVESATO, I ^{[1
]}

FABRICI, E ^{[1
]}

GADIOLI, E ^{[1
]}

GADIOLIERBA, E ^{[1
]}

GALMARINI, M ^{[1
]}

机构：

[1] IST NAZL FIS NUCL, I-20133 MILAN, ITALY

来源：

PHYSICAL REVIEW C | 1992年 / 45卷 / 05期

关键词：

D O I：

10.1103/PhysRevC.45.2369

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：

A method is proposed to account for the emission of light particles in heavy-ion fusion reactions using the Boltzmann master equation approach. The method consists in a simple phase space calculation which allows one to estimate the formation probability of a cluster for a given energy distribution of the nucleons. The emission probability of the clusters at each stage of the equilibration cascade is calculated and the changes of the occupation probabilities of the nucleon energy states due to these emissions is accounted for by a new depletion term in the set of master equations. The calculated spectra of deuterons, tritons, and alpha-particles reproduce satisfactorily the exclusive spectra measured in O-16- and S-32-Ag fusion at 30 MeV/nucleon incident energy. The same model is used to predict the emission of clusters in nucleon-induced reactions with satisfactory results.

引用

页码：2369 / 2378

页数：10

共 23 条

[1] LIGHT PARTICLE-EMISSION IN O-16-INDUCED REACTIONS AT 140, 215, AND 310 MEV [J].

AWES, TC ;

SAINI, S ;

POGGI, G ;

GELBKE, CK ;

CHA, D ;

LEGRAIN, R ;

WESTFALL, GD .

PHYSICAL REVIEW C, 1982, 25 (05) :2361-2390

[2] PRECOMPOUND EMISSION OF LIGHT PARTICLES IN THE REACTION O-16+U-238 AT 20 MEV-NUCLEON [J].

AWES, TC ;

POGGI, G ;

GELBKE, CK ;

BACK, BB ;

GLAGOLA, BG ;

BREUER, H ;

VIOLA, VE .

PHYSICAL REVIEW C, 1981, 24 (01) :89-110

[3] COMPLETE HYDROGEN AND HELIUM PARTICLE SPECTRA FROM 30-MEV TO 60-MEV PROTON BOMBARDMENT OF NUCLEI WITH A=12 TO 209 AND COMPARISON WITH INTRANUCLEAR CASCADE MODEL [J].

BERTRAND, FE ;

PEELLE, RW .

PHYSICAL REVIEW C, 1973, 8 (03) :1045-1064

[4] DYNAMICAL ASPECTS OF INTERMEDIATE-ENERGY NUCLEUS-NUCLEUS COLLISIONS .5. TRANSPORT APPROACH BASED ON TIME-DEPENDENT G-MATRIX THEORY [J].

CASSING, W ;

NIITA, K ;

WANG, SJ .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1988, 331 (04) :439-449

[5] PRECOMPOUND ANALYSES OF NI-58,NI-60,NI-62,NI-64(N,PX) REACTIONS [J].

CASTANEDA, CM ;

ULLMANN, JL ;

BRADY, FP ;

ROMERO, JL ;

KING, NSP ;

BLANN, M .

PHYSICAL REVIEW C, 1983, 28 (04) :1493-1497

[6] A REFINED COALESCENCE MODEL FOR INTERMEDIATE-ENERGY HEAVY-ION COLLISIONS - APPLICATION TO DEUTERON SPECTRA [J].

DATTA, S ;

CAPLAR, R ;

CINDRO, N ;

AUBLE, RL ;

BALL, JB ;

ROBINSON, RL .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 1988, 14 (07) :937-948

[7] FAST-NEUTRON EMISSION FROM PARTIAL FUSION HEAVY-ION REACTIONS [J].

FABRICI, E ;

GADIOLI, E ;

ERBA, EG ;

GALMARINI, M .

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI, 1991, 338 (01) :17-21

[8] HARD PHOTON-EMISSION IN HEAVY-ION REACTIONS [J].

FABRICI, E ;

GADIOLI, E ;

ERBA, EG ;

GALMARINI, M .

PHYSICAL REVIEW C, 1990, 42 (05) :2163-2171

[9] IMPORTANCE OF NUCLEON-NUCLEON INTERACTIONS IN HARDENING NUCLEON SPECTRA IN HEAVY-ION FUSION [J].

FABRICI, E ;

GADIOLI, E ;

ERBA, EG ;

GALMARINI, M ;

FABBRI, F ;

REFFO, G .

PHYSICAL REVIEW C, 1989, 40 (06) :2548-2557

[10]

GADIOLI E, 1992, PREEQUILIBRIUM NUCLE

← 1 2 3 →