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Title: RATE OF FORMATION OF HYDROGEN MOLECULES BY THREE-BODY RECOMBINATION DURING PRIMORDIAL STAR FORMATION

Astrophysical models of primordial star formation require rate constants for three-body recombination as input. The current status of these rates for H{sub 2} due to collisions with H is far from satisfactory, with published rate constants showing orders of magnitude disagreement at the temperatures relevant for H{sub 2} formation in primordial gas. This Letter presents an independent calculation of this recombination rate constant as a function of temperature. An analytic expression is provided for the rate constant which should be more reliable than ones currently being used in astrophysical models.
Authors:
 [1]
  1. Department of Physics, Penn State University, Berks Campus, Reading, PA 19610-6009 (United States)
Publication Date:
OSTI Identifier:
22136577
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 773; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COLLISIONS; COSMOLOGICAL MODELS; HYDROGEN; MOLECULES; REACTION KINETICS; RECOMBINATION; STARS; TEMPERATURE DEPENDENCE; THREE-BODY PROBLEM