A Study on the Nuclear Structure through the Multipurpose Coincidence Measurement System Development (II) - Double ionization of the K-shell in <TEX>$^{125}I$</TEX>-

J Radiat Prot > Volume 18(1); 1993 > Article

Journal of Radiation Protection 1993;18(1):63-0.

다목적 동시측정 장치 개발에 의한 원자핵 구조 연구 (II) - $^{125}I$ 붕괴시 K 각 이중 이온화 현상 -

정원모;정갑수;주관식;남기용;최혜진;전우주;나상균;황한열;

A Study on the Nuclear Structure through the Multipurpose Coincidence Measurement System Development (II) - Double ionization of the K-shell in $^{125}I$-

Chung, Won-Mo;Chung, Kap-Soo;Joo, Koan-Sik;Nam, Kie-Yong;Choi, Hey-Jin;Jeon, Woo-Ju;Na, Sang-Kyun;Hwang, Han-Yull;

ABSTRACT

Double ionization of the K- shell accompanying K- shell electron capture of the 0.035 MeV transition of $^{125}I$ has been studied by counting coincidences between $K_{alpha}$ hypersatellite X-rays and Ka satellite X-rays emitted when double vacancies are filled. The $^{125}I;and;^{125}Te^m$ source materials were used in the measurement. We obtained the coincidence spectrum using two NaI(T1) detectors and a Ge(Li) detector and TAC(Time-to-Amplitude Converter), and then analysed the measured coincidence number $N(K_{alpha}^{II},;K_{alpha}^s)$, the total number $N(K_{alpha})$ of K X-ray. The probability per K-shell electron capture that a double vacancy is formed, $P_{KK}$ is formed, $P_{KK}$ is found to be $2.15{times}10^{-4}$.