Optical spectroscopy and current detection during warm-up and destruction of impurity-helium condensates

I. N. Krushinskaya; I. B. Bykhalo; R. E. Boltnev; A. A. Pelmenev; V. V. Khmelenko; D. M. Lee

Authors

I. N. Krushinskaya Branch of Talroze Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences
I. B. Bykhalo Branch of Talroze Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences
R. E. Boltnev Branch of Talroze Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Joint Institute for High Temperatures
A. A. Pelmenev Branch of Talroze Institute for Energy Problems of Chemical Physics, Russian Academy of Sciences, Joint Institute for High Temperatures
V. V. Khmelenko Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station
D. M. Lee Institute for Quantum Science and Engineering, Department of Physics and Astronomy, Texas A&M University, College Station

Keywords:

condensate, spectroscopy, cryocondensates surface.

Abstract

It is well known that deposition of rare gases (RG) passed through electrical discharge area onto a cold (~ 4 K) surface, or irradiation of cryofilms by energetic particles (electrons, protons, or photons with energies of 20 eV – 4 MeV) can cause formation and stabilization of neutral radicals and ions. Recent experiments have revealed ion currents accompanied by luminescence during destruction of nitrogenhelium condensates prepared by condensation of nitrogen-helium gas mixtures (after passing through a radio frequency RF discharge zone) into superfluid helium (HeII) bulk [1].