Soft X-ray radiation-damage studies in PMMA using a cryo-STXM

Tobias Beetz*, Chris Jacobsen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

Radiation damage sets a fundamental limit for studies with ionizing radiation; cryo-methods are known to ease these limits. Here, measurements on mass loss and the decrease in the C=O bond density as measured by oxygen-edge XANES (NEXAFS) spectroscopy in thin films of poly(methylmethacrylate) (PMMA), studied in a vacuum, are reported. While cryo-methods allow more than 95% of the mass to remain at doses up to 107 Gy, there is little difference in C=O bond density versus dose between 298 K and 113 K sample temperatures. At both temperatures the critical dose for bond breaking is ∼ 15 × 106 Gy.

Original languageEnglish (US)
Pages (from-to)280-283
Number of pages4
JournalJournal of Synchrotron Radiation
Volume10
Issue number3
DOIs
StatePublished - May 1 2003

Keywords

  • PMMA
  • Radiation damage
  • STXM
  • Soft X-rays
  • XANES

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Instrumentation

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