原子核物理评论
原子覈物理評論
원자핵물리평론
Nuclear Physics Review
2015年
1期
30-35
,共6页
三裂变%体系总动能%深度非弹性散射
三裂變%體繫總動能%深度非彈性散射
삼렬변%체계총동능%심도비탄성산사
ternary fission%total kinetic energy of reaction system%deep-inelastic scatter
研究了15 MeV/u 197 Au+197 Au体系三裂变反应过程中体系的集体运动动能、核-核相互作用势、集体运动总动能以及核子激发能的演化过程，并讨论了该反应过程的能量耗散问题。通过与两裂变时体系总动能εtot和Θc.m.关联图作对比，初步得出三裂变反应体系的第一次裂变是极端深度非弹性散射过程；进一步分析了三裂变与两裂变反应体系总动能与碰撞参数的关系，发现小碰撞参数下两裂变比三裂变反应耗散的能量多大约150 MeV，大碰撞参数下三裂变比两裂变反应多消耗300 MeV。
研究瞭15 MeV/u 197 Au+197 Au體繫三裂變反應過程中體繫的集體運動動能、覈-覈相互作用勢、集體運動總動能以及覈子激髮能的縯化過程，併討論瞭該反應過程的能量耗散問題。通過與兩裂變時體繫總動能εtot和Θc.m.關聯圖作對比，初步得齣三裂變反應體繫的第一次裂變是極耑深度非彈性散射過程；進一步分析瞭三裂變與兩裂變反應體繫總動能與踫撞參數的關繫，髮現小踫撞參數下兩裂變比三裂變反應耗散的能量多大約150 MeV，大踫撞參數下三裂變比兩裂變反應多消耗300 MeV。
연구료15 MeV/u 197 Au+197 Au체계삼렬변반응과정중체계적집체운동동능、핵-핵상호작용세、집체운동총동능이급핵자격발능적연화과정，병토론료해반응과정적능량모산문제。통과여량렬변시체계총동능εtot화Θc.m.관련도작대비，초보득출삼렬변반응체계적제일차렬변시겁단심도비탄성산사과정；진일보분석료삼렬변여량렬변반응체계총동능여팽당삼수적관계，발현소팽당삼수하량렬변비삼렬변반응모산적능량다대약150 MeV，대팽당삼수하삼렬변비량렬변반응다소모300 MeV。
We studied the evolution of the collective motion, interaction potential, the total kinetic and exci-tation energies in ternary fissions of 197 Au +197 Au system at 15 Mev/u, and discussed energy dissipation of this reaction. Through the comparison with energy-angle correlation data in binary fissions, we preliminarily concluded that the first fission of ternary fission was an extreme deep-inelastic process. We further analyzed the correlation of the total kinetic energy with impact parameters in both binary and ternary reactions, and found that the total energy of binary reactions systems was lost about 150 MeV more than ternary fission with small impact parameters, and with larger impact parameters the total energy of ternary reactions were lost 300 MeV more than binary reactions.
