Low-Energy Enhancement in the Photon Strength of $^{95}\mathrm{Mo}$

Low-Energy Enhancement in the Photon Strength of ${}^{95}{Mo}$

M. Wiedeking, L. A. Bernstein, M. Krtička, D. L. Bleuel, J. M. Allmond, M. S. Basunia, J. T. Harke, P. Fallon, R. B. Firestone, B. L. Goldblum, R. Hatarik, P. T. Lake, I-Y. Lee, S. R. Lesher, S. Paschalis, M. Petri, L. Phair, and N. D. Scielzo

Phys. Rev. Lett. 108, 162503 – Published 19 April 2012

Abstract

A new experimental technique is presented using proton- $γ − γ$ correlations from ${}^{94}{Mo} (d, p) {}^{95}{Mo}$ reactions which allows for the model-independent extraction of the photon strength function at various excitation energies using primary $γ$ -ray decay from the quasicontinuum to individual low-lying levels. Detected particle energies provide the entrance excitation energies into the residual nucleus while $γ$ -ray transitions from low-lying levels specify the discrete states being fed. Results strongly support the existence of the previously reported low-energy enhancement in the photon strength function.

Received 10 January 2012

DOI:https://doi.org/10.1103/PhysRevLett.108.162503

Authors & Affiliations

M. Wiedeking^1,2, L. A. Bernstein¹, M. Krtička³, D. L. Bleuel¹, J. M. Allmond⁴, M. S. Basunia⁵, J. T. Harke¹, P. Fallon⁵, R. B. Firestone⁵, B. L. Goldblum^5,6,7, R. Hatarik⁵, P. T. Lake⁵, I-Y. Lee⁵, S. R. Lesher¹, S. Paschalis⁵, M. Petri⁵, L. Phair⁵, and N. D. Scielzo¹

¹Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, California 94551, USA
²iThemba LABS, P.O. Box 722, Somerset West 7129, South Africa
³Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, Prague 8, Czech Republic
⁴Department of Physics, University of Richmond, Virginia 23173, USA
⁵Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
⁶Department of Nuclear Engineering, University of California, Berkeley, California 94720, USA
⁷Department of Nuclear Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA