Phys. Rev. Lett. 79, 3150 - 3153 (1997)Femtosecond Dissociation of Core-Excited HCl Monitored by Frequency Detuning |
PRL Celebrates 50 Years
This Week's Milestone Letters are from 1984: |
O. Björneholm1, S. Sundin1,2, S. Svensson1, R. R. T. Marinho3, A. Naves de Brito3, F. Gel'mukhanov4,5, and H. Ågren4
1Department of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden
2University College of Gävle-Sandviken, S-801 7b Gävle, Sweden
3Department of Physics, Brasilia University, 70 910 900 Brasilia DF, Brazil
4Institute of Physics and Measurement Technology, Linköping University, S-581 83, Linköping, Sweden
5Institute of Automation and Electrometry, 630090 Novosibirsk, Russia
Received 17 July 1997
Core excitation of gaseous HCl to the dissociative σ* state leads to a deexcitation spectrum with two qualitatively different contributions—a broad molecular background and narrow atomic lines. The experiment demonstrates that the ratio of integrated intensities from these two contributions depends crucially on the excitation frequency; the molecular background is enhanced with increased detuning of the photon frequency. This is discussed in a time-dependent model, using the concept of an effective duration time for the resonant x-ray scattering process.
©1997 The American Physical Society
URL: http://link.aps.org/abstract/PRL/v79/p3150
DOI: 10.1103/PhysRevLett.79.3150
PACS: 33.80.Gj, 33.20.Rm, 33.50.Dq, 33.70.-w
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