Physical Review LettersProduction and storage of ultracold neutrons in superfluid He4Robert Golub, S. K. LamoreauxPublished Jan 25, 1993• 7 citationsPublisherAbstractA Comment on the Letter by Yoshiki et al., Phys. Rev. Lett. 68, 1323 (1992).Received 6 April 1992DOI:https://doi.org/10.1103/PhysRevLett.70.517©1993 American Physical SocietyDOI10.1103/physrevlett.70.517