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Descamps A, Ofori-Okai BK, Bistoni O, Chen Z, Cunningham E, Fletcher LB, Hartley NJ, Hastings JB, Khaghani D, Mo M, Nagler B, Recoules V, Redmer R, Schörner M, Senesky DG, Sun P, Tsai HE, White TG, Glenzer SH, McBride EE. Evidence for phonon hardening in laser-excited gold using x-ray diffraction at a hard x-ray free electron laser. SCIENCE ADVANCES 2024; 10:eadh5272. [PMID: 38335288 PMCID: PMC10857355 DOI: 10.1126/sciadv.adh5272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 01/10/2024] [Indexed: 02/12/2024]
Abstract
Studies of laser-heated materials on femtosecond timescales have shown that the interatomic potential can be perturbed at sufficiently high laser intensities. For gold, it has been postulated to undergo a strong stiffening leading to an increase of the phonon energies, known as phonon hardening. Despite efforts to investigate this behavior, only measurements at low absorbed energy density have been performed, for which the interpretation of the experimental data remains ambiguous. By using in situ single-shot x-ray diffraction at a hard x-ray free-electron laser, the evolution of diffraction line intensities of laser-excited Au to a higher energy density provides evidence for phonon hardening.
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Affiliation(s)
- Adrien Descamps
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- Aeronautics and Astronautics Department, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
- School of Mathematics and Physics, Queen’s University Belfast, University Road, Belfast BT7 1NN, UK
| | - Benjamin K. Ofori-Okai
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Oliviero Bistoni
- CEA/DAM DIF, F-91297 Arpajon Cedex, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Zhijiang Chen
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Eric Cunningham
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Luke B. Fletcher
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Nicholas J. Hartley
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Jerome B. Hastings
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Dimitri Khaghani
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Mianzhen Mo
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Bob Nagler
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Vanina Recoules
- CEA/DAM DIF, F-91297 Arpajon Cedex, France
- Université Paris-Saclay, CEA, Laboratoire Matière en Conditions Extrêmes, 91680 Bruyères-le-Châtel, France
| | - Ronald Redmer
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
| | - Maximilian Schörner
- Institut für Physik, Universität Rostock, Albert-Einstein-Straße 23, 18059 Rostock, Germany
| | - Debbie G. Senesky
- Aeronautics and Astronautics Department, Stanford University, 450 Serra Mall, Stanford, CA 94305, USA
| | - Peihao Sun
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Hai-En Tsai
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | | | - Siegfried H. Glenzer
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
| | - Emma E. McBride
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
- School of Mathematics and Physics, Queen’s University Belfast, University Road, Belfast BT7 1NN, UK
- PULSE Institute, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
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