J =1 to J =0 D sub 2 conversion in solid D-T

Journal Article · Tue Oct 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.6598· OSTI ID:5180134

Collins, G W; Fearon, E M; Mapoles, E R; Tsugawa, R T; Souers, P C ^[1]; Fedders, P A ^[2]

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1. Lawrence Livermore National Laboratory, University of California, Livermore, California (USA)
2. Department of Physics, Washington University, St. Louis, Missouri (USA)

{ital J}=1 to {ital J}=0 molecular rotational time constants for {ital J}=1 D{sub 2} in solid D-T at 1.8 to 14 K have been obtained by analyzing the longitudinal relaxation times {ital T}{sub 1} of the tritons in the same sample. The inherent time constant in the electric quadrupole theory of {ital T}{sub 1} is a function of both the {ital J}=1 T{sub 2} and {ital J}=1 D{sub 2} concentrations. By subtracting out the {ital J}=1 T{sub 2} behavior as obtained from pure T{sub 2} samples, the {ital J}=1 to {ital J}=0 D{sub 2} time constants remain. From 10 to 14 K, the D{sub 2} time constants are longer than those for T{sub 2} at constant temperature by the ratio of the nuclear magnetic moments. From 1.8 to 5.3 K, the two time constants are identical at about 5 h. A time-constant minimum occurs at about 10 K for both hydrogens. A rate-equation theory of rotational catalysis by free hydrogen atoms created by the tritium radioactivity is presented.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5180134
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:13; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DEUTERIUM
DISPERSIONS
ENERGY LEVELS
EXCITED STATES
HYDROGEN ISOTOPES
ISOTOPES
LIFETIME
LIGHT NUCLEI
MAGNETIC MOMENTS
MAGNETIC RESONANCE
MIXTURES
NUCLEAR MAGNETIC MOMENTS
NUCLEAR MAGNETIC RESONANCE
NUCLEAR PROPERTIES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RELAXATION
RELAXATION TIME
RESONANCE
ROTATIONAL STATES
SOLIDS
SPIN-LATTICE RELAXATION
STABLE ISOTOPES
TRITIUM
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
YEARS LIVING RADIOISOTOPES