Measurement of ultra-fast γ-ray transitions from heavy-ion compound-nucleus reactions

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 354; no. 2; pp. 591 - 594
• Main Authors: Cederwall, B., Lee, I.Y., Asztalos, S., Brinkman, M.J., Becker, J.A., Clark, R.M., Deleplanque, M.A., Diamond, R.M., Fallon, P., Farris, L.P., Henry, E.A., Hughes, J.R., Macchiavelli, A.O., Stephens, F.S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 1995
• ISSN: 0168-9002; 1872-9576; 1872-9576
• DOI: 10.1016/0168-9002(94)01468-X

A method for correcting target-thickness-induced Doppler broadening in γ-ray spectra from weakly populated, very short-lived (femtosecond) states is presented. The method is illustrated by an analysis of superdeformed transitions in
152,153Dy for which the validity of the procedure could be verified consistently from previous lifetime measurements in
152Dy. Furthermore, estimates of the superdeformed lifetimes, previously not measured in
153Dy, are obtained.