title: Partial photoneutron cross sections for the isomeric state 180Tam.
abstract: Photoneutron cross sections for (181)Ta(y, n) (180)Ta(m) were determined from simultaneous measurements of total cross sections (sigma(tot) and ground-state cross sections (sigma(gs)) for (180)Ta in photodisintegration of with laser Compton-backscattered rays. Techniques of direct neutron counting and photoactivation were used for the measurement of sigma(tot) and sigma(gs), respectively. The partial cross sections for the isomeric state serves as a novel probe of the nuclear level density of (180)Ta. Implications for the p- and s-process nucleosynthesis of (180)Ta(m) are given.
authors.affiliation: Department of Physics, Konan University, Higashinada, Kobe, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Goko
authors.forename: H
authors.initials: H
authors.lastname: Utsunomiya
authors.forename: S
authors.initials: S
authors.lastname: Goriely
authors.forename: A
authors.initials: A
authors.lastname: Makinaga
authors.forename: T
authors.initials: T
authors.lastname: Kaihori
authors.forename: S
authors.initials: S
authors.lastname: Hohara
authors.forename: H
authors.initials: H
authors.lastname: Akimune
authors.forename: T
authors.initials: T
authors.lastname: Yamagata
authors.forename: Y-W
authors.initials: YW
authors.lastname: Lui
authors.forename: H
authors.initials: H
authors.lastname: Toyokawa
authors.forename: A J
authors.initials: AJ
authors.lastname: Koning
authors.forename: S
authors.initials: S
authors.lastname: Hilaire