PION DOUBLE-CHARGE-EXCHANGE REACTION ON CA-44 AT 50 MEV

被引：14

作者：

BAER, HW

LEITCH, MJ

MISHRA, CS

WEINFELD, Z

PIASETZKY, E

COMFORT, JR

TINSLEY, J

WRIGHT, DH

机构：

[1] TEL AVIV UNIV, IL-69978 TEL AVIV, ISRAEL

[2] ARIZONA STATE UNIV, TEMPE, AZ 85287 USA

[3] TRIUMF, VANCOUVER V6T 2A3, BC, CANADA

来源：

PHYSICAL REVIEW C | 1991年 / 43卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.43.1458

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：

Angular distributions of pion double-charge-exchange (DCX) reactions at 50 MeV are reported for the ground-state (g.s.) and the double-isobaric-analog-state (DIAS) transitions on Ca-44. These distributions have similar shapes and magnitudes and are considerably more forward peaked than those of the lighter T = 1 nuclei. The spectra at forward angles exhibit nearly exclusive excitation of the g.s. and DIAS. By using a formulation based on the shell model, the magnitude of the scattering amplitude B associated with nonanalog intermediate state transitions is extracted from the data.

引用

页码：1458 / 1461

页数：4

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