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

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

Research output: Contribution to journalConference article

1 Citation (Scopus)

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 languageEnglish (US)
Pages (from-to)299-301
Number of pages3
JournalPhysica Scripta T
VolumeT110
DOIs
StatePublished - Dec 1 2004
EventXXIII International Conference on Photonic, Electronic, and Atomic Collisions, 23rd ICPEAC - Stockholm, Sweden
Duration: Jul 23 2003Jul 29 2003

Fingerprint

Fine Structure
Ionization
elastic scattering
Cross section
Collision
Excitation
fine structure
Scattering
ionization
collisions
Hydrogen Atom
cross sections
excitation
atoms
hydrogen atoms
Coefficient
coefficients
Energy
temperature
energy

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

Cite this

Jonsell, S. ; Forrey, R. C. ; Saenz, A. ; Froelich, P. ; Dalgarno, A. / Fine structure in cold collisions of spin-polarized H(2s) atoms. In: Physica Scripta T. 2004 ; Vol. T110. pp. 299-301.
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Fine structure in cold collisions of spin-polarized H(2s) atoms. / Jonsell, S.; Forrey, R. C.; Saenz, A.; Froelich, P.; Dalgarno, A.

In: Physica Scripta T, Vol. T110, 01.12.2004, p. 299-301.

Research output: Contribution to journalConference article

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 - 2004/12/1

Y1 - 2004/12/1

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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