title: Regulator for controlling liquid helium bath near 4.2 K.
abstract: A simple regulator for stabilizing the temperature of a liquid (4)He bath near 4.2 K is described. The device controls the pressure of the (4)He gas, and achieves a stability of +/-50 muK for the hold-time of the cryostat.
authors.affiliation: Department of Physics, University of California and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720.
authors.forename: T D
authors.initials: TD
authors.lastname: Gamble
authors.forename: W M
authors.initials: WM
authors.lastname: Goubau
authors.forename: M B
authors.initials: MB
authors.lastname: Ketchen
authors.forename: J
authors.initials: J
authors.lastname: Clarke