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Title: High-temperature Hydrogen Isotope Targets

Abstract

The use of Nd and Pr deuterides and tritides for hightemperature hydrogen isotope targets was investigated, and the results were compared with those on Zr or Ti films. Results of dissociation pressure as a function of composition for the Nd-H system showed that for atomic ratios of hydrogen to metal up to 1.9: 1, NdH is thermally much more stable than TiH. Plots of log dissociation pressure versus the reciprocal of temperature for NdH/sub 1.9/, PrH/ sub 1.9/, TiD/sub 1.5/ , and ZrD/sub 1.45/ show that at 500 deg C the dissociation pressure of NdH/sub 1.9/ is about 6 orders of magnitude less than that of TiD/sub 1.5/ and about 4 orders of magnitude less than that of ZrD/sub 1.45/. The results indicate that a target of composition NdH/sub 1.9/ should withstand temperatures at least 200 deg C higher than the target based on Ti or Zr. (P.C.H.)

Authors:
;
Publication Date:
Research Org.:
Services Electronics Research Lab., Baldock, Herts, Eng.
Sponsoring Org.:
USDOE
OSTI Identifier:
4037309
NSA Number:
NSA-18-018518
Resource Type:
Journal Article
Journal Name:
Nature (London)
Additional Journal Information:
Journal Volume: 201; Journal Issue: 4924; Other Information: Orig. Receipt Date: 31-DEC-64; Journal ID: ISSN 0028-0836
Publisher:
Nature Publishing Group
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
PHYSICS; ATOMS; DECOMPOSITION; DIAGRAMS; FILMS; HIGH TEMPERATURE; HYDRIDES; HYDROGEN; ISOTOPES; METALS; NEODYMIUM; NEODYMIUM HYDRIDES; PERFORMANCE; PLANNING; PRASEODYMIUM; PRASEODYMIUM HYDRIDES; PRESSURE; STABILITY; TARGETS; TEMPERATURE; TESTING; TITANIUM; TITANIUM HYDRIDES; TRITIUM COMPOUNDS; USES; ZIRCONIUM; ZIRCONIUM HYDRIDES

Citation Formats

REDSTONE, R., and ROWLAND, M. C. High-temperature Hydrogen Isotope Targets. Country unknown/Code not available: N. p., 1964. Web. doi:10.1038/2011115b0.
REDSTONE, R., & ROWLAND, M. C. High-temperature Hydrogen Isotope Targets. Country unknown/Code not available. doi:10.1038/2011115b0.
REDSTONE, R., and ROWLAND, M. C. Sat . "High-temperature Hydrogen Isotope Targets". Country unknown/Code not available. doi:10.1038/2011115b0.
@article{osti_4037309,
title = {High-temperature Hydrogen Isotope Targets},
author = {REDSTONE, R. and ROWLAND, M. C.},
abstractNote = {The use of Nd and Pr deuterides and tritides for hightemperature hydrogen isotope targets was investigated, and the results were compared with those on Zr or Ti films. Results of dissociation pressure as a function of composition for the Nd-H system showed that for atomic ratios of hydrogen to metal up to 1.9: 1, NdH is thermally much more stable than TiH. Plots of log dissociation pressure versus the reciprocal of temperature for NdH/sub 1.9/, PrH/ sub 1.9/, TiD/sub 1.5/ , and ZrD/sub 1.45/ show that at 500 deg C the dissociation pressure of NdH/sub 1.9/ is about 6 orders of magnitude less than that of TiD/sub 1.5/ and about 4 orders of magnitude less than that of ZrD/sub 1.45/. The results indicate that a target of composition NdH/sub 1.9/ should withstand temperatures at least 200 deg C higher than the target based on Ti or Zr. (P.C.H.)},
doi = {10.1038/2011115b0},
journal = {Nature (London)},
issn = {0028-0836},
number = 4924,
volume = 201,
place = {Country unknown/Code not available},
year = {1964},
month = {3}
}