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Title: Time Resolved Phase Transitions via Dynamic Transmission Electron Microscopy

Abstract

The Dynamic Transmission Electron Microscope (DTEM) project is developing an in situ electron microscope with nanometer- and nanosecond-scale resolution for the study of rapid laser-driven processes in materials. We report on the results obtained in a year-long LDRD-supported effort to develop DTEM techniques and results for phase transitions in molecular crystals, reactive multilayer foils, and melting and resolidification of bismuth. We report the first in situ TEM observation of the HMX {beta}-{delta} phase transformation in sub-{micro}m crystals, computational results suggesting the importance of voids and free surfaces in the HMX transformation kinetics, and the first electron diffraction patterns of intermediate states in fast multilayer foil reactions. This project developed techniques which are applicable to many materials systems and will continue to be employed within the larger DTEM effort.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
902321
Report Number(s):
UCRL-TR-228336
TRN: US0702925
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; BISMUTH; ELECTRON DIFFRACTION; ELECTRON MICROSCOPES; KINETICS; MELTING; MOLECULAR CRYSTALS; PHASE TRANSFORMATIONS; RESOLUTION; TRANSFORMATIONS; TRANSMISSION ELECTRON MICROSCOPY

Citation Formats

Reed, B W, Armstrong, M R, Blobaum, K J, Browning, N D, Burnham, A K, Campbell, G H, Gee, R, Kim, J S, King, W E, Maiti, A, Piggott, W T, and Torralva, B R. Time Resolved Phase Transitions via Dynamic Transmission Electron Microscopy. United States: N. p., 2007. Web. doi:10.2172/902321.
Reed, B W, Armstrong, M R, Blobaum, K J, Browning, N D, Burnham, A K, Campbell, G H, Gee, R, Kim, J S, King, W E, Maiti, A, Piggott, W T, & Torralva, B R. Time Resolved Phase Transitions via Dynamic Transmission Electron Microscopy. United States. doi:10.2172/902321.
Reed, B W, Armstrong, M R, Blobaum, K J, Browning, N D, Burnham, A K, Campbell, G H, Gee, R, Kim, J S, King, W E, Maiti, A, Piggott, W T, and Torralva, B R. Thu . "Time Resolved Phase Transitions via Dynamic Transmission Electron Microscopy". United States. doi:10.2172/902321. https://www.osti.gov/servlets/purl/902321.
@article{osti_902321,
title = {Time Resolved Phase Transitions via Dynamic Transmission Electron Microscopy},
author = {Reed, B W and Armstrong, M R and Blobaum, K J and Browning, N D and Burnham, A K and Campbell, G H and Gee, R and Kim, J S and King, W E and Maiti, A and Piggott, W T and Torralva, B R},
abstractNote = {The Dynamic Transmission Electron Microscope (DTEM) project is developing an in situ electron microscope with nanometer- and nanosecond-scale resolution for the study of rapid laser-driven processes in materials. We report on the results obtained in a year-long LDRD-supported effort to develop DTEM techniques and results for phase transitions in molecular crystals, reactive multilayer foils, and melting and resolidification of bismuth. We report the first in situ TEM observation of the HMX {beta}-{delta} phase transformation in sub-{micro}m crystals, computational results suggesting the importance of voids and free surfaces in the HMX transformation kinetics, and the first electron diffraction patterns of intermediate states in fast multilayer foil reactions. This project developed techniques which are applicable to many materials systems and will continue to be employed within the larger DTEM effort.},
doi = {10.2172/902321},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Feb 22 00:00:00 EST 2007},
month = {Thu Feb 22 00:00:00 EST 2007}
}

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