Resonant H – Photodetachment: Enhanced Photodestruction and Consequences for Radiative Feedback
Stancil, P. C.
McLaughlin, B. M.
Forrey, R. C.
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CitationMiyake, S., P. C. Stancil, H. R. Sadeghpour, A. Dalgarno, B. M. McLaughlin, and R. C. Forrey. 2010. “ Resonant H – Photodetachment: Enhanced Photodestruction and Consequences for Radiative Feedback.” The Astrophysical Journal 709 (2) (January 14): L168–L171. doi:10.1088/2041-8205/709/2/l168. http://dx.doi.org/10.1088/2041-8205/709/2/L168.
AbstractThe hydrogen negative ion plays a crucial role in the formation of hydrogen molecules in the early universe. Cooling through excitation of \(H_2\) drives the formation of the first cosmological objects. The \(H_2\) molecules are produced primarily by a reaction sequence initiated by \(H^–\). We explore the influence of enhanced photodestruction rates that arise due to absorption by resonance states of \(H^–\) lying near 11 eV. We examine the feedback effects that occur in radiation fields characteristic of Population III stars, blackbody sources, power-law spectra, and the hydrogen Lyman modulated sawtooth spectra of the high-redshift intergalactic medium.
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