ANALYZING POWERS AND ISOTOPE RATIOS FOR THE NATAG(P, INTERMEDIATE-MASS FRAGMENT) REACTION AT 200 MEV

被引：23

作者：

RENSHAW, E ^{[1
]}

YENNELLO, SJ ^{[1
]}

KWIATKOWSKI, K ^{[1
]}

PLANETA, R ^{[1
]}

WOO, LW ^{[1
]}

VIOLA, VE ^{[1
]}

机构：

[1] INDIANA UNIV, CYCLOTRON FACIL, BLOOMINGTON, IN 47405 USA

来源：

PHYSICAL REVIEW C | 1991年 / 44卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.44.2618

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：

Analyzing powers and isotope ratios have been measured for ejectiles with Z less-than-or-equal-to 7 emitted at forward angles in the 200-MeV p+(nat)Ag reaction. The observed analyzing powers are consistent with zero, and thus do not provide evidence for a significant contribution from cluster knockout, or similar direct formation mechanisms. Fragment kinetic-energy spectra above the Coulomb peak are compared with a coalescence calculation. The isotopic composition of the elemental kinetic-energy spectra is found to favor N/Z greater-than-or-equal-to 1 nuclei for fragment energies near the exit-channel Coulomb energy, whereas species with N/Z less-than-or-equal-to 1 are more abundant in the high-energy spectral tails. This behavior is consistent with the prediction of an accreting source calculation.

引用

页码：2618 / 2624

页数：7

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