The radiation-induced conversion of para to orthohydrogen was investigated at pressures between 1 to 15 x 10(power 6) Pa at three temperatures : 77 K(LN2), 200 K (dry ice), and 300 K (ambient). Ther radiation dose levels were studied: gamma rays only at 8 x 10(power 6) rads and a combination of 5 x 10(power 12) n mm(power -2), E greater than 1 MeV, plus gamma rays at 8 x 10(power 5) rads. The conversion at LN2 temperature was nearly zero in all cases.


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    Title :

    The conversion of para to orthohydrogen in a gamma-ray and neutron radiation field


    Additional title:

    Die Umwandlung von Para in Orthowasserstoff durch Gamma- und Neutronenstrahlung


    Contributors:
    Conant, J.W. (author) / Edeskuty, F.J. (author) / Huston, J.E. (author) / Thome, F.V. (author)

    Published in:

    Cryogenics ; 15 , 1 ; 12-16


    Publication date :

    1975


    Size :

    5 Seiten, 5 Tabellen, 9 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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