RECOIL REFINEMENTS: IMPLICATIONS FOR THE 40AR/39AR DATING TECHNIQUE

dc.contributor.author	Onstott T.C.
dc.contributor.author	Miller M.L.
dc.contributor.author	Ewing R.C.
dc.contributor.author	Arnold G.W.
dc.contributor.author	Walsh D.S.
dc.date.accessioned	2020-12-04T06:53:54Z
dc.date.available	2020-12-04T06:53:54Z
dc.date.issued	1995
dc.identifier	https://elibrary.ru/item.asp?id=31617364
dc.identifier.citation	Geochimica et Cosmochimica Acta, 1995, , 9, 1821-1834
dc.identifier.issn	0016-7037
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/20381
dc.description.abstract	Integration of the neutron energy distribution for a water-moderated reactor with the most recent cross-section data yields mean recoil energies of 177 keV for 39K (n, p) 39Ar, 969 keV for 40Ca (n, α) 37Ar, and 140 eV for 37Cl (n, γ) 38Cl (β) 38Ar. These estimates are insensitive to the anisotropy of reaction products. Utilizing Monte Carlo simulations of collision cascades, we calculate a mean recoil range of 1620 Å for 39K (n, p) 39Ar, 3780 Å for 40Ca (n, α) 37Ar, and 11 Å for 37Cl (n, γ) 38Cl (β) 38Ar. Rutherford backscatter (RBS) measurements of argon implantation experiments into albite confirm the veracity of these estimates. Integration of the recoil range distributions yields a mean depletion depth in a semi-infinite medium of 820 Å for 39Ar, 1950 Å for 37Ar, and 6 Å for 38Ar.
dc.title	RECOIL REFINEMENTS: IMPLICATIONS FOR THE 40AR/39AR DATING TECHNIQUE
dc.type	Статья

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