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Title: Contrasting behavior of covalent and molecular carbon allotropes exposed to extreme ultraviolet and soft x-ray free-electron laser radiation

Journal Article · · Physical Review. B
 [1];  [2];  [2];  [3];  [4];  [2];  [1];  [5];  [6];  [7];  [8];  [8];  [9];  [10];  [11];  [12];  [13];  [14];  [14];  [6]
  1. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics; Czech Technical Univ., Prague (Czech Republic)
  2. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics
  3. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics; Charles Univ., Prague (Czech Republic)
  4. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Nuclear Physics Inst.
  5. Univ. of Bordeaux, Talence (France). CELIA Lab.
  6. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Physics, Inst. of Plasma Physics
  7. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Center for Free Electron Laser Science; Polish Academy of Sciences (PAS), Krakow (Poland). Inst. of Nuclear Physics
  8. RIKEN, Hyogo (Japan). Harima Inst.
  9. Polish Academy of Sciences (PAS), Warsaw (Poland). Inst. of Physics
  10. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  11. European X-ray Free-Electron Laser (XFEL), Schenefeld (Germany)
  12. Helmholtz-Zentrum Geesthacht (HZG), (Germany)
  13. Academy of Sciences of the Czech Republic (ASCR), Prague (Czech Republic). Inst. of Plasma Physics
  14. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
+ Show Author Affiliations

All carbon materials, e.g., amorphous carbon (a-C) coatings and C 60 fullerene thin films, play an important role in short-wavelength free-electron laser (FEL) research motivated by FEL optics development and prospective nanotechnology applications. We investigate responses of a-C and C 60 layers to the extreme ultraviolet (SPring-8 Compact SASE Source in Japan) and soft x-ray (free-electron laser in Hamburg) free-electron laser radiation by Raman spectroscopy, differential interference contrast, and atomic force microscopy. A remarkable difference in the behavior of covalent (a-C) and molecular ( C 60 ) carbonaceous solids is demonstrated under these irradiation conditions. Low thresholds for ablation of a fullerene crystal (estimated to be around 0.15 eV/atom for C 60 vs 0.9 eV/atom for a-C in terms of the absorbed dose) are caused by a low cohesive energy of fullerene crystals. An efficient mechanism of the removal of intact C 60 molecules from the irradiated crystal due to Coulomb repulsion of fullerene-cage cation radicals formed by the ionizing radiation is revealed by a detailed modeling.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-76SF00515; 14-29772S; LM2015083; CZ.02.1.01/0.0/0.0/16_013/0001552; LG15013
OSTI ID:
1417299
Journal Information:
Physical Review. B, Vol. 96, Issue 21; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

References (31)

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Cited By (5)

Controlled strong excitation of silicon as a step towards processing materials at sub-nanometer precision journal November 2019
Thermal and nonthermal melting of III-V compound semiconductors journal April 2019
Various damage mechanisms in carbon and silicon materials under femtosecond X-ray irradiation text January 2018
Controlled strong excitation of silicon as a step towards processing materials at sub-nanometer precision text January 2019
Various damage mechanisms in carbon and silicon materials under femtosecond X-ray irradiation journal January 2018

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