title: Electrical breakdown in helium cells at low temperature.
abstract: Electrical breakdown of partially filled helium cells below 0.5 K is shown to be the result of Penning ionization of metastable triplet helium excimers bound to the surface of the liquid.
authors.affiliation: Physics Department, Brown University, Providence, Rhode Island 02912, USA.
authors.forename: B
authors.initials: B
authors.lastname: Sethumadhavan
authors.forename: W
authors.initials: W
authors.lastname: Yao
authors.forename: Y H
authors.initials: YH
authors.lastname: Huang
authors.forename: R E
authors.initials: RE
authors.lastname: Lanou
authors.forename: H J
authors.initials: HJ
authors.lastname: Maris
authors.forename: G M
authors.initials: GM
authors.lastname: Seidel