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The stellar (n,γ) cross sections of the stable iridium isotopes

✍ Scribed by S. Jaag

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
141 KB
Volume
621
Category
Article
ISSN
0375-9474

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✦ Synopsis

The existing keV neutron capture cross section data of the stable Ir isotopes 191 and 193 exhibit large discrepancies and have never been published in their final versions [1,2]. Therefore, the stellar cross sections of these isotopes have been remeasured relative to that of gold by means of the activation method. Metallic samples were irradiated in a quasi-stellar neutron spectrum for kT = 25 keV using the 7Li(p,n)TBe reaction near threshold. The resulting stellar cross sections of 191Ir and 19air show uncertainties of 4 and 7 percent, respectively, in excellent agreement with the values given by Macklin et al. [1].

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