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Outgassing of Glass Caused by Thermal Neutrons and Gamma Radiation
Author(s) -
ALTEMOSE V. O.
Publication year - 1966
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1966.tb15414.x
Subject(s) - outgassing , neutron temperature , helium , radiochemistry , boron , neutron , materials science , glass tube , hydrogen , radiation , analytical chemistry (journal) , chemistry , nuclear physics , composite material , tube (container) , physics , organic chemistry , chromatography
Prebaked evacuated glass bulbs were exposed to gamma radiation and thermal neutrons. The gases initially present in the bulb plus those evolved in a subsequent baking were measured and analyzed with a mass spectrometer. Several glasses were exposed to a gamma dosage of more than 10 7 rads. Small quantities of hydrogen as well as some CO, CO 2 , and water were detected. Several boron‐containing glasses were exposed to more than 10 17 thermal neutrons/cm 2 . The gas evolved was almost entirely helium, formed as a result of alpha‐particle emission in the reactionThe total quantity of helium formed can be predicted from the thermal neutron dose and the boron content of the glass. The role of helium permeability is also discussed.