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Proceedings Paper

Gamma-ray multiplicity and neutron resonance parameter measurements with the Dubna 4pi detector Romashka
Author(s): G. P. Georgiev; N. G. Panajotova
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Paper Abstract

A set-up based on a 16-section NaI(Tl) scintillation detector has been created at the 500 m flight-path of the IBR-30 booster in Dubna. The total volume of the detector is 36 liters, and the geometric efficiency is 80 percent. This detector measures gamma-cascades from resolved neutron resonances to obtain gamma-multiplicity spectra from neutron capture events. The 10B loaded converter, positioned inside the detector, makes it possible to detect also neutron scattering events by measuring monoenergetic gamma- quanta from the 10B(n, (alpha) (gamma) ) reaction. Thus, the same detector simultaneously registers neutron capture and neutron scattering events in the target under identical conditions. This permits spins, neutron and radiative widths, and neutron strength functions of resonances, to be determined. Applications of the detector for gamma- multiplicity studies are presented in the example of several Hf, Sn and Sm isotopes.

Paper Details

Date Published: 27 February 1997
PDF: 4 pages
Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); doi: 10.1117/12.267855
Show Author Affiliations
G. P. Georgiev, Joint Institute for Nuclear Research (Russia)
N. G. Panajotova, Joint Institute for Nuclear Research (Russia)

Published in SPIE Proceedings Vol. 2867:
International Conference Neutrons in Research and Industry
George Vourvopoulos, Editor(s)

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