Kinetics of. beta. -particle-induced exchange between H/sub 2/, D/sub 2/, and T/sub 2/ at 298 K
A quadrupole mass filter system was constructed in order to measure the equilibrium constants and rates of reaction of the ..beta..-particle-induced exchanges between H/sub 2/, D/sub 2/, and T/sub 2/ at cryogenic temperatures. Even with careful calibration experiments at 298 K, we could not completely remove the mass discrimination inherent in our method. We estimate the accuracy of our room-temperature mixture analyses to be +-2.2% in the D/sub 2/-DT-T/sub 2/ system, and +-9% in the H/sub 2/-HT-T/sub 2/ system. Preliminary kinetic experiments showed that the time to reach equilibrium in the exchange H/sub 2/ + T/sub 2/ = 2HT is 7 to 14 h at 298 K. The equivalent time interval in the exchange D/sub 2/ + T/sub 2/ = 2DT is 3.5 to 7 h at the same temperature. This measured isotope effect of the factor two can be used to predict the rates of DT exchange from HT rates in the literature.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6715840
- Report Number(s):
- UCRL-80442; CONF-780508-25; TRN: 78-016076
- Resource Relation:
- Conference: 3. meeting on the technology of controlled thermonuclear fusion, Santa Fe, NM, USA, 9 May 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
DEUTERIUM
ISOTOPE EFFECTS
ISOTOPIC EXCHANGE
TRITIUM
ACCURACY
EQUILIBRIUM
MEDIUM TEMPERATURE
REACTION KINETICS
THERMONUCLEAR REACTORS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
HYDROGEN ISOTOPES
ISOTOPES
KINETICS
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
060800* - Fusion Fuels- Properties- (1980-1987)
400203 - Isotope Exchange & Isotope Separation- (-1987)