Size-dependent angular distributions of low-energy photoelectrons emitted from NaCI nanoparticles

Kevin R. Wilson, Zou Shengli, Shu Jinian, Eckart Rühl, Stephen R. Leone, George C. Schatz, Musahid Ahmed

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


Angle-resolved threshold photoelectron spectra are recorded for size-selected beams of sodium chloride nanoparticles (radius = 25-250 nm). The photoelectron angular distributions exhibit a size-dependent asymmetry that is inversely proportional to particle radius. A model of the internal electric field amplitude and the photoelectron escape probability inside the particles reveals that the asymmetry in photoemission arises because the finite dimensions of the particle are comparable to both the photon penetration depth (14-22 nm) and electron escape length (10 nm).

Original languageEnglish
Pages (from-to)2014-2019
Number of pages6
JournalNano letters
Issue number7
Publication statusPublished - Jul 1 2007

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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