Author/Authors :
Burke، J. نويسنده , , Leinweber، G. نويسنده , , Lubitz، C. R. نويسنده , , Knox، H. D. نويسنده , , Drindak، N. J. نويسنده , , Block، R. C. نويسنده , , Slovacek، R. E. نويسنده , , Wemer، C. J. نويسنده , , Francis، N. C. نويسنده , , Danon، Y. نويسنده , , Moretti، B. E. نويسنده ,
Abstract :
Neutron capture and transmission measurements were performed by the time-of-flight technique at the Rensselaer Polytechnic institute LINAC using metallic zirconium samples. The capture measurement was made at the 25-m flight station with a multiplicity-type capture detector, and the transmission total cross-section measurements were performed at the 25-m flight station with a ^Li glass scintillation detector. Resonance parameters were determined by a combined analysis of all 11 data sets (4 capture and 7 transmission) using the least-squares multilevel R-matrix code REFIT. The present measurements were undertaken to re.fnilve discrr.fiuncies hetween cnmmun u.wsf (ENDF/ B-VI) and the recent measurements of Salah et al.forthe 300-eV zirconium doublet. Thepresent measurements support the Salah et al. conclusions. Specifically, the results confirm the assignment of J = 3 for the 91Zr 292.5-eV resonance and include all significant resonances up to 2.5 keV. The zirconium resonance parameters tau(r) and tau(n,) determined in the present measurement, are compared with the ENDF/B-VI parameters.
