Electronic Resource
Springer
The European physical journal
181 (1964), S. 196-205
ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The shape of the allowed positron spectrum from the decay of Na22 has been studied under various experimental conditions in an ironfree, double-focusing spectrometer in search of instrumental distortions of the spectrum. The possibility of positrons back-scattering from the material directly behind the source on the optical path of the positrons was studied. The beta spectrum shape was measured with end-plates (located ∼6.5 cm behind the source) of aluminum, lucite and lead. Different spectrometer baffle settings were also used. No differences were observed in the spectrum shapes taken under the different experimental conditions. The experimental shape factor could be fitted with an empirical shape of the form of (1+b/W) with 0.10≲b≲0.3 in agreement with earlier work.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01380507
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