BINARY DISSIPATIVE PROCESSES AND FORMATION OF HOT NUCLEI IN AR-36+AL-27 REACTIONS FROM 55 TO 95 MEV/U

	BINARY DISSIPATIVE PROCESSES AND FORMATION OF HOT NUCLEI IN AR-36+AL-27 REACTIONS FROM 55 TO 95 MEV/U
	PETER, J ; JEONG, SC ; ANGELIQUE, JC ; AUGER, G ; BIZARD, G ; BROU, R ; BUTA, A ; CABOT, C ; CASSAGNOU, Y ; CREMA, E
刊名	NUCLEAR PHYSICS A
	1995-10-09
卷号	593 页码:95-123
关键词	NUCLEAR REACTIONS AL-27(AR-36,X), E=55-95 MEV/NUCLEON CHARGED PRODUCTS DETECTED WITH A 4-PI ARRAY DEEP INELASTIC COLLISIONS AT ALL IMPACT PARAMETERS PARTICIPANT-SPECTATOR REGIME FORMATION AND DECAY OF HOT NUCLEI WITH E-ASTERISK/A-LESS-THAN-OR-EQUAL-TO-11 MEV
ISSN号	0375-9474
英文摘要	A 4 pi multidetector array with a high efficiency has been used ia detect the charged products from reactions induced by Ar-36 on Al-27 at energies ranging from 55 to 95 MeV/u. Well characterized events were selected and sorted as a function of the impact parameter. Fusion or full stopping events have a very small cross section. Dissipative binary collisions accompanied by pre-equilibrium (mid-rapidity) emission, and followed by de-excitation of the quasi-projectile and quasi-target, were found to dominate for all impact parameters. The mass of the quasi-projectile has been reconstructed from its products and found to be slightly below the projectile mass. Isotropic emission in its rest frame has been observed at all energies and impact parameters, indicating that equilibrated nuclei may have been formed. The excitation energy of the quasi-projectile, determined via calorimetry, and the slope of kinetic energy spectra of alpha-particles were found to increase with incident energy and with decreasing impact parameter. Excitation energies per nucleon above II MeV are reached in a sizable cross section (70 mb). The mass distribution and kinetic energy spectra of emitted particles and fragments are essentially governed by the excitation energy, with a weak dependence on the impact parameter. The evolution of dissipative processes from deep inelastic collisions to the participant-spectator regime is discussed.
WOS关键词	CHARGED-PARTICLE ; COLLISIONS ; DYNAMICS
WOS研究方向	Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:A1995RY68900007
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/26167]
专题	中国科学院近代物理研究所
通讯作者	PETER, J
作者单位	1.UNIV CAEN,F-14050 CAEN,FRANCE 2.GANIL,F-14021 CAEN,FRANCE 3.UNIV CATHOLIQUE LOUVAIN,INST PHYS NUCL,B-1348 LOUVAIN,BELGIUM 4.UNIV NANTES,SUBATECH,F-44072 NANTES,FRANCE 5.ECOLE MINES NANTES,CNRS,IN2P3,F-44072 NANTES,FRANCE 6.UNIV NAPLES,DIPARTIMENTO SCI FISICHE,I-80125 NAPLES,ITALY 7.UNIV NAPLES,IST NAZL FIS NUCL,I-80125 NAPLES,ITALY 8.INST MODERN PHYS,LANZHOU 730000,PEOPLES R CHINA 9.SOONGSIL UNIV,DEPT PHYS,SEOUL,SOUTH KOREA 10.CENS,SPHN,DAPNIA,GIF SUR YVETTE,FRANCE
推荐引用方式 GB/T 7714	PETER, J,JEONG, SC,ANGELIQUE, JC,et al. BINARY DISSIPATIVE PROCESSES AND FORMATION OF HOT NUCLEI IN AR-36+AL-27 REACTIONS FROM 55 TO 95 MEV/U[J]. NUCLEAR PHYSICS A,1995,593:95-123.
APA	PETER, J.,JEONG, SC.,ANGELIQUE, JC.,AUGER, G.,BIZARD, G.,...&VIENT, E.(1995).BINARY DISSIPATIVE PROCESSES AND FORMATION OF HOT NUCLEI IN AR-36+AL-27 REACTIONS FROM 55 TO 95 MEV/U.NUCLEAR PHYSICS A,593,95-123.
MLA	PETER, J,et al."BINARY DISSIPATIVE PROCESSES AND FORMATION OF HOT NUCLEI IN AR-36+AL-27 REACTIONS FROM 55 TO 95 MEV/U".NUCLEAR PHYSICS A 593(1995):95-123.