Photoexcitation of [sup 93m]Nb in the 5- to 30-MeV gamma-energy range

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Nuclear Science and Engineering; (United States)

OSTI ID:5407231

Safar, J; Lakosi, L ^[1]

---

1. Hungarian Academy of Sciences, Budapest (Hungary). Inst. of Isotopes

The cross section of the [sup 93]Nb([gamma],[gamma][prime])[sup 93m]Nb reaction is calculated in the 5- to 30-MeV gamma-energy region in the framework of a gamma-ray cascade model with open nucleon emission channels and including pre-equilibrium contribution. The resulting cross-section curve shows one pronounced peak at the neutron separation energy with an integral of 3.1 mb [center dot] MeV up to 12 MeV. Taking into consideration the pre-equilibrium gamma emission, a negligible contribution to the calculated excitation curve results at [approximately]18 MeV. The influence of gamma background on the response of [sup 93]Nb as a neutron fluence monitor is estimated for two practical cases.

• OSTI ID: 5407231
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 115:4; ISSN NSENAO; ISSN 0029-5639
• Country of Publication: United States
• Language: English

Related Subjects

663410* -- Photonuclear Reactions & Photon Scattering-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CONTAINERS
CROSS SECTIONS
DATA
DOSIMETRY
EXCITATION FUNCTIONS
FUNCTIONS
INELASTIC SCATTERING
INFORMATION
MEASURING INSTRUMENTS
MONITORS
NEUTRON MONITORS
NIOBIUM 93 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
PHOTONUCLEAR REACTIONS
PRESSURE VESSELS
RADIATION MONITORS
REACTORS
SCATTERING
TARGETS
THEORETICAL DATA
WATER COOLED REACTORS