Neutron resonance spectroscopy of 106Pd and 108Pd from 20 to 2000 eV

Parity nonconserving asymmetries have been measured in p-wave resonances of 106Pd and 108Pd. The data analysis requires knowledge of the neutron resonance parameters. Transmission and capture γ-ray yields were measured for En=20–2000 eV with the time-of-flight method at the Los Alamos Neutron Science Center (LANSCE). A total of 28 resonances in 106Pd and 32 resonances in 108Pd were studied. The resonance parameters for 106Pd are new for all except one resonance. In 108Pd six new resonances were observed and the precision improved for many of the resonance parameters. A Bayesian analysis was used to assign orbital angular momentum for the resonances studied. Disciplines Atomic, Molecular and Optical Physics | Physics Authors Bret E. Crawford, J D. Bowman, P P J. Delheij, T Haseyama, J N. Knudsen, L Y. Lowie, A Masaike, Y Matsuda, G E. Mitchell, S I. Penttila, H Postma, N R. Roberson, S J. Seestrom, E I. Sharapov, Sharon L. Stephenson, and V W. Yuan This article is available at The Cupola: Scholarship at Gettysburg College: http://cupola.gettysburg.edu/physfac/23 Neutron resonance spectroscopy of Pd and Pd from 20 to 2000 eV B. E. Crawford,* J. D. Bowman, P. P. J. Delheij, T. Haseyama, J. N. Knudson, L. Y. Lowie, A. Masaike, Y. Matsuda, G. E. Mitchell, S. I. Penttila, H. Postma, N. R. Roberson, S. J. Seestrom, E. I. Sharapov, S. L. Stephenson, and V. W. Yuan Duke University, Durham, North Carolina 27708 and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 Los Alamos National Laboratory, Los Alamos, New Mexico 87545 TRIUMF, Vancouver, British Columbia, Canada V6T 2A3 Physics Department, Kyoto University, Kyoto 606-01, Japan North Carolina State University, Raleigh, North Carolina 27695-8202 and Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708-0308 University of Technology, Delft, 2600 GA, The Netherlands Joint Institute for Nuclear Research, 141980 Dubna, Russia ~Received 23 January 1998! Parity nonconserving asymmetries have been measured in p-wave resonances of Pd and Pd. The data analysis requires knowledge of the neutron resonance parameters. Transmission and capture g-ray yields were measured for En520–2000 eV with the time-of-flight method at the Los Alamos Neutron Science Center ~LANSCE!. A total of 28 resonances in Pd and 32 resonances in Pd were studied. The resonance parameters for Pd are new for all except one resonance. In Pd six new resonances were observed and the precision improved for many of the resonance parameters. A Bayesian analysis was used to assign orbital angular momentum for the resonances studied. @S0556-2813~98!01208-4# PACS number~s!: 24.30.2v, 25.40.Ny, 27.60.1j, 24.80.1y