Browsing Геология России by Subject "(U-TH)/HE"

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4HE/3HE THERMOCHRONOMETRY

Shuster D.L.; Farley K.A. (2004)

Using classical diffusion theory, we present a mathematical technique for the determination of 4He concentration profiles in minerals. This approach should prove useful for constraining the low-temperature cooling histories ...
QUANTIFYING THE DIFFUSION KINETICS AND SPATIAL DISTRIBUTIONS OF RADIOGENIC 4HE IN MINERALS CONTAINING PROTON-INDUCED 3HE

Shuster D.L.; Farley K.A.; Sisterson J.M.; Burnett D.S. (2004)

Apatite, titanite and olivine samples were bombarded with a ~150 MeV proton beam to produce ~108 atoms/mg of spallation 3He. High-precision stepped-heating experiments were then performed in which the artificial 3He and, ...

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