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Comprehensive Analysis of Internal Conversion Coefficients in 119mSnTEXAS

This study delves into the internal conversion theory through precise measurements in 119mSnTEXAS. Explore the impact on nuclear science quality and critical cases yet to be measured. Examine theories vs. experiments and key conclusions on hole calculations.

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Comprehensive Analysis of Internal Conversion Coefficients in 119mSnTEXAS

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  1. Further test of internal-conversion theory with a measurement in 119mSnTEXAS A&M PROGRAM TO MEASURE ICCN. NICA Internal Conversion Coefficients (ICC): • Big impact on quality of nuclear science • Central for USNDP and other nuclear data programs • Intensely studied by theory and experiment • Important result: hole calculation now standard • Still to measure critical cases!!!

  2. 2002RA45 survey ICC’s theories and measurements • Theory: RHFS and RDF comparison • Exchange interaction, Finite size of nucleus, Hole treatment • Experiment: • 100 E2, M3, E3, M4, E5 ICC values, 0.5%-6% precision, • very few <1% precision! • Conclusions,Δ(exp:theory)%: • No hole: +0.19(26)% BEST! • (bound and continuum states - SCF of neutral atom) • Hole-SCF: -0.94(24)% • (continuum - SCF of ion + hole (full relaxation of ion orbitals)) • Hole-FO: -1.18(24)% • (continuum - ion field from bound wave functions of neutral atom • (no relaxation of ion orbitals)) • PHYSICAL ARGUMENT • K-shell filling timevs. time to leave atom • ~10-15 – 10-17 s » ~10-18 s

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