Providing Assistance to Insurance Employees and Their Families
The Insurance Charities, established in 1902, offers financial aid and support to past and present insurance workers and their dependents in the UK and Ireland. With a focus on holistic care and practical help, the charity aims to help individuals regain self-sufficiency during times of need. The Leicester branch has been actively contributing and assisting insurance professionals in the region, providing various forms of support, including financial aid and essential services.
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Presentation Transcript
Continued search for the Fade out of collective enhancements Charity, Reviol, Sobotka [WU] & Chajecki [MSU-?] Physics/History Collective enhancements: REDISTRUBTUION of the MANY-BODY density of states from high low excitation energy for deformed nuclei. At high T (sp occupation smeared out) deformed-to-spherical transition and low-energy enhancements die. We searched for this transition (at ANL) and did NOT find it (2007 PRC). Conclusions: A transition (if it exists) is either more diffuse in E* than predicted (SU3 SM) AND/OR lower in E* than we looked. We also said (re SMMC) . Since then Yoram Alhassid has done exactly that Detailed excitation function study of 2, 3, and 4 n evaporation spectra of both deformed and ~ spherical rare earths. his work suggests we have to look lower in E*.
Our previous work NO evidence for Fade out found E* > 50 MeV EXPECTATIONS With Col. En. RESULTS Without Col. En.
K = Enhancement factor Alhassid s recent results look E* ~ 15- 30 MeV (for deformed nuclei ) Do NOT expect to see transition (no Coll. En.) leading to 144Nd residues Do expect to see transition reflected in n-spectra (leading to) 152-154Nd residues. NEED high-quality neutron spectra leading from to nuclei with 10 MeV < E*< 30 MeV Excitation functions of
Q-A Search for demise of collect enhancements Either use fusion [as we did before (p,p ) or (a,a ) [as we did for GDR built on excited states with Thoennessen Most important physics question (for stable beams) Charity/Sobotka ANL] or TAMU] Don t know Don t care. How do these questions relate to the present priorities of the field. Interested in excellent beam timing & few meter n-TOF for intermediate angles in front of FMA WITHOUT GS or GRETINA. Beam intensities should not be a problem. Accelerator and tech. Unrelated to Collective Enhancements, we are interested in advancing tech. for large Si-strip arrays or arrays of PSD capable scintillators. Our new HINP chip will be ready this fall. HUGH dynamic range (two simultaneous shapers) improved DISC. TECH development
