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Title: Two-photon absorption of soft X-ray free electron laser radiation by graphite near the carbon K-absorption edge

Abstract

We have examined the transmission of soft X-ray pulses from the FERMI free electron laser through carbon films of varying thickness, quantifying nonlinear effects of pulses above and below the carbon K-edge. At typical of soft X-ray free electron laser intensities, pulses exhibit linear absorption at photon energies above and below the K-edge, ~308 and ~260 eV, respectively; whereas two-photon absorption becomes significant slightly below the K-edge, ~284.2 eV. The measured two-photon absorption cross section at 284.18 eV (~6 x 10-48 cm4 s) is 7 orders of magnitude above what is expected from a simple theory based on hydrogen-like atoms - a result of resonance effects.

Authors:
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Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1440738
Report Number(s):
NREL/JA-5K00-71689
Journal ID: ISSN 0009-2614
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Resource Relation:
Journal Name: Chemical Physics Letters; Journal Volume: 703; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; two-photon absorption; transmission geometry; K-edge; linear absorption

Citation Formats

Lam, Royce K., Raj, Sumana L., Pascal, Tod A., Pemmaraju, C. D., Foglia, Laura, Simoncig, Alberto, Fabris, Nicola, Miotti, Paolo, Hull, Christopher J., Rizzuto, Anthony M., Smith, Jacob W., Mincigrucci, Riccardo, Masciovecchio, Claudio, Gessini, Alessandro, De Ninno, Giovanni, Diviacco, Bruno, Roussel, Eleonore, Spampinati, Simone, Penco, Giuseppe, Di Mitri, Simone, Trovò, Mauro, Danailov, Miltcho B., Christensen, Steven T., Sokaras, Dimosthenis, Weng, Tsu-Chien, Coreno, Marcello, Poletto, Luca, Drisdell, Walter S., Prendergast, David, Giannessi, Luca, Principi, Emiliano, Nordlund, Dennis, Saykally, Richard J., and Schwartz, Craig P. Two-photon absorption of soft X-ray free electron laser radiation by graphite near the carbon K-absorption edge. United States: N. p., 2018. Web. doi:10.1016/j.cplett.2018.05.021.
Lam, Royce K., Raj, Sumana L., Pascal, Tod A., Pemmaraju, C. D., Foglia, Laura, Simoncig, Alberto, Fabris, Nicola, Miotti, Paolo, Hull, Christopher J., Rizzuto, Anthony M., Smith, Jacob W., Mincigrucci, Riccardo, Masciovecchio, Claudio, Gessini, Alessandro, De Ninno, Giovanni, Diviacco, Bruno, Roussel, Eleonore, Spampinati, Simone, Penco, Giuseppe, Di Mitri, Simone, Trovò, Mauro, Danailov, Miltcho B., Christensen, Steven T., Sokaras, Dimosthenis, Weng, Tsu-Chien, Coreno, Marcello, Poletto, Luca, Drisdell, Walter S., Prendergast, David, Giannessi, Luca, Principi, Emiliano, Nordlund, Dennis, Saykally, Richard J., & Schwartz, Craig P. Two-photon absorption of soft X-ray free electron laser radiation by graphite near the carbon K-absorption edge. United States. doi:10.1016/j.cplett.2018.05.021.
Lam, Royce K., Raj, Sumana L., Pascal, Tod A., Pemmaraju, C. D., Foglia, Laura, Simoncig, Alberto, Fabris, Nicola, Miotti, Paolo, Hull, Christopher J., Rizzuto, Anthony M., Smith, Jacob W., Mincigrucci, Riccardo, Masciovecchio, Claudio, Gessini, Alessandro, De Ninno, Giovanni, Diviacco, Bruno, Roussel, Eleonore, Spampinati, Simone, Penco, Giuseppe, Di Mitri, Simone, Trovò, Mauro, Danailov, Miltcho B., Christensen, Steven T., Sokaras, Dimosthenis, Weng, Tsu-Chien, Coreno, Marcello, Poletto, Luca, Drisdell, Walter S., Prendergast, David, Giannessi, Luca, Principi, Emiliano, Nordlund, Dennis, Saykally, Richard J., and Schwartz, Craig P. Sun . "Two-photon absorption of soft X-ray free electron laser radiation by graphite near the carbon K-absorption edge". United States. doi:10.1016/j.cplett.2018.05.021.
@article{osti_1440738,
title = {Two-photon absorption of soft X-ray free electron laser radiation by graphite near the carbon K-absorption edge},
author = {Lam, Royce K. and Raj, Sumana L. and Pascal, Tod A. and Pemmaraju, C. D. and Foglia, Laura and Simoncig, Alberto and Fabris, Nicola and Miotti, Paolo and Hull, Christopher J. and Rizzuto, Anthony M. and Smith, Jacob W. and Mincigrucci, Riccardo and Masciovecchio, Claudio and Gessini, Alessandro and De Ninno, Giovanni and Diviacco, Bruno and Roussel, Eleonore and Spampinati, Simone and Penco, Giuseppe and Di Mitri, Simone and Trovò, Mauro and Danailov, Miltcho B. and Christensen, Steven T. and Sokaras, Dimosthenis and Weng, Tsu-Chien and Coreno, Marcello and Poletto, Luca and Drisdell, Walter S. and Prendergast, David and Giannessi, Luca and Principi, Emiliano and Nordlund, Dennis and Saykally, Richard J. and Schwartz, Craig P.},
abstractNote = {We have examined the transmission of soft X-ray pulses from the FERMI free electron laser through carbon films of varying thickness, quantifying nonlinear effects of pulses above and below the carbon K-edge. At typical of soft X-ray free electron laser intensities, pulses exhibit linear absorption at photon energies above and below the K-edge, ~308 and ~260 eV, respectively; whereas two-photon absorption becomes significant slightly below the K-edge, ~284.2 eV. The measured two-photon absorption cross section at 284.18 eV (~6 x 10-48 cm4 s) is 7 orders of magnitude above what is expected from a simple theory based on hydrogen-like atoms - a result of resonance effects.},
doi = {10.1016/j.cplett.2018.05.021},
journal = {Chemical Physics Letters},
number = C,
volume = 703,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2018},
month = {Sun Jul 01 00:00:00 EDT 2018}
}