INPP Seminar | Oct. 18

The Institute of Nuclear and Particle Physics Seminar series presents Andrew S. Voyles discussing "Investigating high-energy proton-induced reactions: Implications for level densities and the preequilibrium exciton model" on Oct. 18 at 4 p.m.

Voyles is from Lawrence Berkeley National Laboratory.

In-person seminars will be in Lindley 321. For remote seminars, connection info for the video conference (TEAMS or ZOOM) and abstract of the talk will be communicated by email before the seminar. The emails are sent to the inpp-seminar mailing list. To be added to this mailing list, contact Prakash .

The host is A.V. Voinov.

Abstract: Multihundred MeV proton accelerators are promising sites for the large-scale production of medical radionuclides due to the high production rates enabled by their high-intensity beam capabilities and the long range of high-energy protons. However, the ability to reliably conduct isotope production at these accelerators and model relevant (p,x) reactions in the 100–200 MeV range is hampered by a lack of measured data. The current suite of predictive reaction-modeling codes is only accurate to within approximately 20% for (p,x) and (n,x) reaction channels where a large body of experimental measurements currently exists. In cases where few data exist, these codes often exhibit discrepancies anywhere within a factor of 2–50. In order to address this deficiency, experiments and a detailed assessment of the TALYS code were performed. Particular attention was paid to the formulation of the two-component exciton model in the transition between the compound and preequilibrium regions, with a linked investigation of level density models for nuclei off of stability and their impact on modeling predictive power. Experimental results and model calculations will be presented.