Non-thermal photodesorption of N{sub 2} from Ag(111)

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The authors have measured translational and rotational energy distributions of N{sub 2} molecules following desorption from a Ag(111) surface by infrared (1,064 nm) radiation. The observed desorption yields were large even at laser fluences far below that required for laser induced thermal desorption. State resolved laser techniques using coherent VUV radiation showed that the rotational and translational energy distributions of the desorbing N{sub 2} molecules are not consistent with the predictions of the heat diffusion model governing laser induced surface heating. These results suggest that physisorbed adsorbates can couple directly to the nascent phonon distribution or the nascent electron-hole pairs ... continued below

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11 p.

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Rao, R. M.; Beuhler, R. J. & White, M. G. February 1998.

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The authors have measured translational and rotational energy distributions of N{sub 2} molecules following desorption from a Ag(111) surface by infrared (1,064 nm) radiation. The observed desorption yields were large even at laser fluences far below that required for laser induced thermal desorption. State resolved laser techniques using coherent VUV radiation showed that the rotational and translational energy distributions of the desorbing N{sub 2} molecules are not consistent with the predictions of the heat diffusion model governing laser induced surface heating. These results suggest that physisorbed adsorbates can couple directly to the nascent phonon distribution or the nascent electron-hole pairs in the photoexcited substrate without heating of the surface.

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11 p.

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OSTI as DE98004669

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  • BIOS `98: an international symposium on biomedical optics, San Jose, CA (United States), 24-30 Jan 1998

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  • Other: DE98004669
  • Report No.: BNL--65222
  • Report No.: CONF-980117--
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 653963
  • Archival Resource Key: ark:/67531/metadc703969

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  • February 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 9, 2015, 10:09 p.m.

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Rao, R. M.; Beuhler, R. J. & White, M. G. Non-thermal photodesorption of N{sub 2} from Ag(111), article, February 1998; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc703969/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.