Fine structure in cold collisions of spin-polarized H(2s) atoms

S. Jonsell; R. C. Forrey; A. Saenz; P. Froelich; A. Dalgarno

doi:10.1238/Physica.Topical.110a00299

Fine structure in cold collisions of spin-polarized H(2s) atoms

S. Jonsell, R. C. Forrey, A. Saenz, P. Froelich, A. Dalgarno

Division of Science (Berks)

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

We have calculated cross sections and rate coefficients for elastic scattering, ionization, and double excitation transfer in collision of two hydrogen atoms in the 2s state. We find that for collision energies between 5 × 10^-10 a.u. and 10^-6 a.u. elastic scattering has the largest cross section. For temperatures below 0.02 K ionization is the dominant loss process, while for higher temperatures double excitation transfer dominates. Our results for the total loss rate are found to be within a factor 2 or 3 of the error bars of recent measurements.

Original language	English (US)
Pages (from-to)	299-301
Number of pages	3
Journal	Physica Scripta T
Volume	T110
DOIs	https://doi.org/10.1238/Physica.Topical.110a00299
State	Published - 2004
Event	XXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC - Stockholm, Sweden Duration: Jul 23 2003 → Jul 29 2003

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
Mathematical Physics
Condensed Matter Physics
Physics and Astronomy(all)

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10.1238/Physica.Topical.110a00299

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title = "Fine structure in cold collisions of spin-polarized H(2s) atoms",

abstract = "We have calculated cross sections and rate coefficients for elastic scattering, ionization, and double excitation transfer in collision of two hydrogen atoms in the 2s state. We find that for collision energies between 5 × 10-10 a.u. and 10-6 a.u. elastic scattering has the largest cross section. For temperatures below 0.02 K ionization is the dominant loss process, while for higher temperatures double excitation transfer dominates. Our results for the total loss rate are found to be within a factor 2 or 3 of the error bars of recent measurements.",

author = "S. Jonsell and Forrey, {R. C.} and A. Saenz and P. Froelich and A. Dalgarno",

year = "2004",

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volume = "T110",

pages = "299--301",

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TY - JOUR

T1 - Fine structure in cold collisions of spin-polarized H(2s) atoms

AU - Jonsell, S.

AU - Forrey, R. C.

AU - Saenz, A.

AU - Froelich, P.

AU - Dalgarno, A.

PY - 2004

Y1 - 2004

N2 - We have calculated cross sections and rate coefficients for elastic scattering, ionization, and double excitation transfer in collision of two hydrogen atoms in the 2s state. We find that for collision energies between 5 × 10-10 a.u. and 10-6 a.u. elastic scattering has the largest cross section. For temperatures below 0.02 K ionization is the dominant loss process, while for higher temperatures double excitation transfer dominates. Our results for the total loss rate are found to be within a factor 2 or 3 of the error bars of recent measurements.

AB - We have calculated cross sections and rate coefficients for elastic scattering, ionization, and double excitation transfer in collision of two hydrogen atoms in the 2s state. We find that for collision energies between 5 × 10-10 a.u. and 10-6 a.u. elastic scattering has the largest cross section. For temperatures below 0.02 K ionization is the dominant loss process, while for higher temperatures double excitation transfer dominates. Our results for the total loss rate are found to be within a factor 2 or 3 of the error bars of recent measurements.

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U2 - 10.1238/Physica.Topical.110a00299

DO - 10.1238/Physica.Topical.110a00299

M3 - Conference article

AN - SCOPUS:42249098864

SN - 0281-1847

VL - T110

SP - 299

EP - 301

JO - Physica Scripta T

JF - Physica Scripta T

T2 - XXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC

Y2 - 23 July 2003 through 29 July 2003

ER -

Fine structure in cold collisions of spin-polarized H(2s) atoms

Abstract

All Science Journal Classification (ASJC) codes

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