Decay Data and Medical I sotopes Essential for determining Overall dose Specific dose Imaging background Production cross section Over half were last studied gt30 years ago 30 Years ago 12 small detectors ID: 1022167
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1. High Precision Decay Data for Medical Isotopes
2. Decay Data and Medical Isotopes Essential for determining:Overall doseSpecific doseImaging backgroundProduction cross sectionOver half were last studied >30 years ago !!30 Years ago: 1-2 small detectorsPresent: 10-100 detectors
3. Important medical isotopes requiring new measurements of decay data produced at BLIPShipped to world’s largest -ray array Gammasphere (100 HPGe detectors) for high-precision -ray spectroscopy USNDP-BLIP Decay Data CollaborationBrookhaven Linear Isotope Producer (BLIP)
4. Starting point : 82Rb for Cardiac PETD. Le Guludec et al., Eur. J. Nucl. Med. Mol. Imaging 35, 1709 (2008). R.A. Meyer et al., Phys. Rev. C 27, 2217 (1983). 2 Ge(Li) detectors
5. Prior SinglesPreliminary Analysis Very PromisingGate on 2+0+Rb-82 decay
6. What we learned (and where to go)Gammasphere is incredibly powerfulCoincidence efficiency is AMAZINGCould study several isotopes at onceCould simultaneously measure decay schemes AND cross sectionsImagingCardiac ImagingCharged particle cross-section database for medical radioisotope production: diagnostic radioisotopes and monitor reactions - IAEA-TECDOC-1211
7. First results from “dual” experiments100 MeV protons on natural NiWe make a lot and some isotopes have applied usesFor example, Co-55 and Mn-52, both studied 1970’sSingles
8. Gate on 1434-keV935744Coincidences are essentialDecay of Mn-52
9. One last example19681971
10. Prior Gated SpectrumPreliminary Analysis of As-72 DecayExcellent statistics on known transitionsMany new transitions
11. Summary and OutlookInitiated a successful campaign of measurements combining BLIP and Gammasphere capabilitiesNew beta decay measurements will improve ENSDFAlso possibility for cross section measurementsLOTS OF DATA: Anyone interested?
12. CollaboratorsA.A. SonzogniNational Nuclear Data Center, Brookhaven National LaboratoryS.V. Smith, L. MuenchBrookhaven Linear Isotope Producer, Brookhaven National LaboratoryC.D. NesarajaPhysics Division, Oak Ridge National LaboratoryJ.P. Greene, M.P. Carpenter, and S. ZhuPhysics Division, Argonne National LaboratoryC.J. Lister, P. Chowdhury, and K. MoranPhysics Department, University of Massachusetts, Lowell