Surface ionization of metastable calcium atoms

Surface ionization of metastable calcium atoms

We report on an experimental study of surface ionization of metastable calcium atoms on a hot polycrystalline tungsten surface in vacuum. We implemented a hollow-cathode discharge to excite a fraction of calcium atoms in an atomic beam to metastable states and collected the resulting calcium ions. W...

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Main Authors: I. Bucay, A. Helal, M. G. Raizen
Format: Article
Language:English
Published: AIP Publishing LLC 2021-01-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0005895
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spelling doaj-74b03ec9a8f94f81a25c22148749cccb2021-02-02T21:32:43ZengAIP Publishing LLCAIP Advances2158-32262021-01-01111015020015020-810.1063/5.0005895Surface ionization of metastable calcium atomsI. Bucay0A. Helal1M. G. Raizen2Center for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USACenter for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USACenter for Nonlinear Dynamics and Department of Physics, The University of Texas at Austin, Austin, Texas 78712, USAWe report on an experimental study of surface ionization of metastable calcium atoms on a hot polycrystalline tungsten surface in vacuum. We implemented a hollow-cathode discharge to excite a fraction of calcium atoms in an atomic beam to metastable states and collected the resulting calcium ions. We observed that metastable calcium atoms are ionized with a significantly greater efficiency than ground-state atoms, and the results suggest that virtually every metastable atom impacting the hot surface is ionized. These results demonstrate the potential of metastable atom surface ionization as a means of enriching calcium isotopes for applications in medicine, metrology, and fundamental science.http://dx.doi.org/10.1063/5.0005895
collection DOAJ
language English
format Article
sources DOAJ
author I. Bucay
A. Helal
M. G. Raizen
spellingShingle I. Bucay
A. Helal
M. G. Raizen
Surface ionization of metastable calcium atoms
AIP Advances
author_facet I. Bucay
A. Helal
M. G. Raizen
author_sort I. Bucay
title Surface ionization of metastable calcium atoms
title_short Surface ionization of metastable calcium atoms
title_full Surface ionization of metastable calcium atoms
title_fullStr Surface ionization of metastable calcium atoms
title_full_unstemmed Surface ionization of metastable calcium atoms
title_sort surface ionization of metastable calcium atoms
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2021-01-01
description We report on an experimental study of surface ionization of metastable calcium atoms on a hot polycrystalline tungsten surface in vacuum. We implemented a hollow-cathode discharge to excite a fraction of calcium atoms in an atomic beam to metastable states and collected the resulting calcium ions. We observed that metastable calcium atoms are ionized with a significantly greater efficiency than ground-state atoms, and the results suggest that virtually every metastable atom impacting the hot surface is ionized. These results demonstrate the potential of metastable atom surface ionization as a means of enriching calcium isotopes for applications in medicine, metrology, and fundamental science.
url http://dx.doi.org/10.1063/5.0005895
work_keys_str_mv AT ibucay surfaceionizationofmetastablecalciumatoms
AT ahelal surfaceionizationofmetastablecalciumatoms
AT mgraizen surfaceionizationofmetastablecalciumatoms
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