EVIDENCE OF A 2-SOURCE EMISSION FOR LIGHT CHARGED-PARTICLES IN COINCIDENCE WITH PIONS PRODUCED IN O-16+AL-27 COLLISIONS AT 94 MEV NUCLEON

被引：15

作者：

BARBERA, R

BADALA, A

ADORNO, A

BONASERA, A

DITORO, M

PALMERI, A

PAPPALARDO, GS

BIZARD, G

BOUGAULT, R

DURAND, D

GENOUXLUBAIN, A

LAVILLE, JL

LEFEBVRES, F

PATRY, JP

JIN, GM

ROSATO, E

机构：

[1] UNIV CAEN,PHYS CORPUSCULAIRE LAB,CNRS,INST NATL NUCL & PHYS PARTICULES,F-14032 CAEN,FRANCE

[2] GRAND ACCELERATOR NATL IONS LOURDES,F-14021 CAEN,FRANCE

[3] NAPLES UNIV,DIPARTIMENTO SCI FIS,I-80125 NAPLES,ITALY

[4] NAPLES UNIV,IST NAZL FIS NUCL,I-80125 NAPLES,ITALY

来源：

NUCLEAR PHYSICS A | 1990年 / 518卷 / 04期

关键词：

Nuclear reactions;

D O I：

10.1016/0375-9474(90)90190-W

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：

H and He ions have been detected in coincidence with charged pions in the reaction induced by 16O on 27Al target at 94 MeV/u incident energy. We analyse velocity spectra and cross sections of He ions emitted in the angular range 4°-150° in coincidence with charged pions detected at 90°. A two-source emission mechanism of the helium particles and a pion statistical production from an equilibrated participant zone is stressed. The absolute yields at different angles are compared with results of a theoretical model for medium energy heavy-ion reactions in the framework of a participant-spectator picture. © 1990.

引用

页码：767 / 785

页数：19

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