Points from Foregoing Letters

    Article metrics

    Abstract

    WHEN beryllium is bombarded by fast neutrons, a radioactive substance is produced of half-period about one second. New experiments by Dr. T. Bjerge show that it is a gaseous substance, probably helium of atomic mass six or five. The energy distribution of the (3-rays (electrons) emitted by this radioactive gas has been measured by Dr. T. Bjerge and Dr. K. J. Brostrom, and agrees with the view that the electrons arise during the transformation of helium atoms of mass six into lithium atoms of the same atomic mass.

    Rights and permissions

    Reprints and Permissions

    About this article

    Comments

    By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.