Plasma characteristics of the discharge produced during mechanoluminescence

Nathan C. Eddingsaas, Kenneth S Suslick

Research output: Contribution to journalArticlepeer-review


The conditions during light emission from the fracture of solids have been difficult to determine because such mechanoluminescence (ML) is usually weak. When ML is produced by acoustic cavitation of a liquid slurry of resorcinol crystals, however, we observe bright light emission, which makes it possible to measure plasma conditions by emission spectra: a bimodal heavy atom emission temperature profile is observed with 405±22K (for 80% of emitting CH) and 4015±730K (for 20%), with an electron density and energy of 1.3±0.13×1014cm-3 and ∼3.5eV (i.e., an effective Te∼41000K).

Original languageEnglish (US)
Article number234301
JournalPhysical review letters
Issue number23
StatePublished - Dec 3 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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