Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms

N. Herschbach; P.J.J. Tol; W. Hogervorst; W. Vassen

doi:10.1103/PhysRevA.61.050702

Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms

N. Herschbach
, P.J.J. Tol
, W. Hogervorst
, W. Vassen

Quantum Metrology & Laser Applications

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We measure the suppression of Penning ionization in an ultracold He(2 S-3(1)) atomic cloud after spin-polarizing the atoms by optical pumping in a small magnetic field. An upper limit of 6x10(-12) cm(3)/s for the ionization rate constant is deduced, at least a factor 20 lower than measured in an unpolarized gas.

Original language	English
Article number	050702
Journal	Physical Review A. Atomic, Molecular and Optical Physics
Volume	61
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevA.61.050702
Publication status	Published - 2000

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title = "Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms",

abstract = "We measure the suppression of Penning ionization in an ultracold He(2 S-3(1)) atomic cloud after spin-polarizing the atoms by optical pumping in a small magnetic field. An upper limit of 6x10(-12) cm(3)/s for the ionization rate constant is deduced, at least a factor 20 lower than measured in an unpolarized gas.",

author = "N. Herschbach and P.J.J. Tol and W. Hogervorst and W. Vassen",

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AU - Herschbach, N.

AU - Tol, P.J.J.

AU - Hogervorst, W.

AU - Vassen, W.

PY - 2000

Y1 - 2000

N2 - We measure the suppression of Penning ionization in an ultracold He(2 S-3(1)) atomic cloud after spin-polarizing the atoms by optical pumping in a small magnetic field. An upper limit of 6x10(-12) cm(3)/s for the ionization rate constant is deduced, at least a factor 20 lower than measured in an unpolarized gas.

AB - We measure the suppression of Penning ionization in an ultracold He(2 S-3(1)) atomic cloud after spin-polarizing the atoms by optical pumping in a small magnetic field. An upper limit of 6x10(-12) cm(3)/s for the ionization rate constant is deduced, at least a factor 20 lower than measured in an unpolarized gas.

U2 - 10.1103/PhysRevA.61.050702

DO - 10.1103/PhysRevA.61.050702

M3 - Article

SN - 1050-2947

VL - 61

JO - Physical Review A. Atomic, Molecular and Optical Physics

JF - Physical Review A. Atomic, Molecular and Optical Physics

IS - 5

M1 - 050702

ER -

Suppression of Penning ionization by spin polarization of cold He(2 S-3) atoms

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