Continuous Scanning Method for Angular Correlation Measurement of Positron Annihilation Gamma Using Multiple Channel Analyzer
Resource
CHINESE JOURNAL OF PHYSICS, VOL. 9, NO. 2
Journal
CHINESE JOURNAL OF PHYSICS
Journal Volume
VOL. 9
Journal Issue
NO. 2
Pages
-
Date Issued
1971-10
Date
1971-10
Author(s)
Jan, G.J.
O'Yang, J.Y.
Tseng, P.K.
Liaw, H.B.
Young, C.S.
DOI
2006092712003069599
Abstract
In this report we describe a new automatic angular correlation measurement
method for gamma-ray pairs arising from positron annihilation. An
arm of a goniometer used in the angular correlation experiment is programmed
to sweep an arc of certain angle continuously. The angular displacement of
the moving arm is converted to D. C. voltage and fed to ADC of a multichannel
analyzer as a sampling signal. The coincidence pulses of two gamma rays
serve as sampling commands and are stored in the multichannel analyzer as
a function of the sampling D.C. signal, e.g., the angular displacement of the
goniometer arm.
The method makes one possible to set up inexpensive reliable measuremet
system. With minor modification it can also be applied to other experiments.
Publisher
臺北市:國立臺灣大學物理系所
Type
journal article
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