32-Channel pyrometer with high dynamic range for studies of shocked nanothermites

Will P. Bassett, Dana D. Dlott

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A 32-channel optical pyrometer has been developed for studying temperature dynamics of shock-initiated reactive materials with one nanosecond time resolution and high dynamic range. The pyrometer consists of a prism spectrograph which directs the spectrally-resolved emission to 32 fiber optics and 32 photomultiplier tubes and digitizers. Preliminary results show shock-initiated reactions of a nanothermite composite, nano CuO/Al in nitrocellulose binder, consists of three stages. The first stage occurred at 30 ns, right after the shock unloaded, the second stage at 100 ns and the third at 1 μs, and the temperatures ranged from 2100K to 3000K. Time-resolved emission spectra suggest hot spots formed during shock unloading, which initiated the bulk thermite/nitrocellulose reaction.

Original languageEnglish (US)
Title of host publicationShock Compression of Condensed Matter - 2015
Subtitle of host publicationProceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter
EditorsRamon Ravelo, Thomas Sewell, Ricky Chau, Timothy Germann, Ivan I. Oleynik, Suhithi Peiris
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414570
DOIs
StatePublished - Jan 13 2017
Event19th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2015 - Tampa, United States
Duration: Jun 14 2015Jun 19 2015

Publication series

NameAIP Conference Proceedings
Volume1793
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other19th Biennial American Physical Society Conference on Shock Compression of Condensed Matter, SCCM 2015
CountryUnited States
CityTampa
Period6/14/156/19/15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Bassett, W. P., & Dlott, D. D. (2017). 32-Channel pyrometer with high dynamic range for studies of shocked nanothermites. In R. Ravelo, T. Sewell, R. Chau, T. Germann, I. I. Oleynik, & S. Peiris (Eds.), Shock Compression of Condensed Matter - 2015: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter [060012] (AIP Conference Proceedings; Vol. 1793). American Institute of Physics Inc.. https://doi.org/10.1063/1.4971568