SUBTHRESHOLD PION-PRODUCTION FROM NUCLEUS-NUCLEUS COLLISIONS AROUND 100 MEV NUCLEON - IMPACT PARAMETER DEPENDENCE WITHIN THE MODIFIED FIREBALL MODEL

被引：6

作者：

BADALA, A ^{[1
]}

BARBERA, R ^{[1
]}

PALMERI, A ^{[1
]}

PAPPALARDO, GS ^{[1
]}

RIGGI, F ^{[1
]}

RUSSO, AC ^{[1
]}

机构：

[1] UNIV CATANIA,DIPARTIMENTO FIS,I-95129 CATANIA,ITALY

来源：

ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1993年 / 344卷 / 04期

关键词：

D O I：

10.1007/BF01283203

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：

Several global variables were tested with the aim to determine the impact parameter in nucleus-nucleus collisions producing pions at incident energies around 100 MeV/nucleon. The experimental set-up includes the MEDEA multidetector, part of which is used as a pi0 spectrometer, and an additional hodoscope of plastic scintillators to cover very forward angles. A statistical model was used to generate both inclusive and pion-triggered events. Selection of well measured events was made through the measured total parallel momentum. Among the different global variables which were tested, the average parallel velocity was seen to give the best correlation with the impact parameter.

引用

页码：455 / 467

页数：13

共 19 条

[1]

ADORNO A, 1988, NUCL PHYS A, V488, pC451, DOI 10.1016/0375-9474(88)90281-3

[2] CORRELATED FISSION FRAGMENTS EMITTED IN THE REACTION OF O-16 ON U-238 AT 20 MEV-NUCLEON [J].

BACK, BB ;

WOLF, KL ;

MIGNEREY, AC ;

GELBKE, CK ;

AWES, TC ;

BREUER, H ;

VIOLA, VE ;

DYER, P .

PHYSICAL REVIEW C, 1980, 22 (05) :1927-1944

[3] A STUDY FOR THE USE OF THE LNS CRYSTAL BALL MULTIDETECTOR AS A NEUTRAL PIONS SPECTROMETER [J].

BADALA, A ;

BARBERA, R ;

PALMERI, A ;

PAPPALARDO, GS ;

RIGGI, F ;

RUSSO, AC .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1991, 306 (1-2) :283-290

[4] STATISTICAL AND MICROSCOPIC DESCRIPTION OF ENERGETIC PRODUCTS IN THE REACTIONS INDUCED BY O-16 ON AL-27, NI-58, AND AU-197 AT 94 MEV NUCLEON [J].

BADALA, A ;

BARBERA, R ;

BONASERA, A ;

DITORO, M ;

PALMERI, A ;

PAPPALARDO, GS ;

RIGGI, F ;

RUSSO, G ;

BIZARD, G ;

DURAND, D ;

LAVILLE, JL .

PHYSICAL REVIEW C, 1991, 43 (01) :190-200

[5] PROTON-HELIUM CORRELATION IN 94 MEV NUCLEON O-16-INDUCED REACTIONS ON AL, NI, AND AU TARGETS [J].

BADALA, A ;

BARBERA, R ;

PALMERI, A ;

PAPPALARDO, GS ;

RIGGI, F ;

BIZARD, G ;

DURAND, D ;

LAVILLE, JL .

PHYSICAL REVIEW C, 1992, 45 (04) :1730-1744

[6] 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 [J].

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 .

NUCLEAR PHYSICS A, 1990, 518 (04) :767-785

[7]

BARBERA R, 1990, NUCL PHYS A, V519, pC231, DOI 10.1016/0375-9474(90)90630-5

[8] STATISTICAL PION AND HARD PHOTON PRODUCTION IN MEDIUM-ENERGY HEAVY-ION COLLISIONS [J].

BONASERA, A ;

DITORO, M ;

GREGOIRE, C .

NUCLEAR PHYSICS A, 1988, 483 (3-4) :738-752

[9] ISOSPIN EFFECTS ON PION-PRODUCTION BY HEAVY-IONS [J].

BONASERA, A ;

BERTSCH, GF .

PHYSICS LETTERS B, 1987, 195 (04) :521-523

[10]

BONASERA A, 1987, NUCL PHYS A, V463, P563

← 1 2 →