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Selected spectroscopic results on element 115 decay chains

115番元素の崩壊連鎖に関する選り抜きの分光実験結果

Rudolph, D.*; Forsberg, U.*; Golubev, P.*; Sarmiento, L. G.*; Yakushev, A.*; Andersson, L.-L.*; Di Nitto, A.*; D$"u$llmann, Ch. E.*; Gates, J. M.*; Gregorich, K. E.*; Gross, C. J.*; Herzberg, R.-D.*; He${ss}$berger, F. P.*; Khuyagbaatar, J.*; Kratz, J. V.*; Rykaczewski, K.*; Sch$"a$del, M.; ${AA}$berg, S.*; Ackermann, D.*; Block, M.*; Brand, H.*; Carlsson, B. G.*; Cox, D.*; Derkx, X.*; Eberhardt, K.*; Even, J.*; Fahlander, C.*; Gerl, J.*; J$"a$ger, E.*; Kindler, B.*; Krier, J.*; Kojouharov, I.*; Kurz, N.*; Lommel, B.*; Mistry, A.*; Mokry, C.*; Nitsche, H.*; Omtvedt, J. P.*; Papadakis, P.*; Ragnarsson, I.*; Runke, J.*; Schaffner, H.*; Schausten, B.*; Th$"o$rle-Pospiech, P.*; Torres, T.*; Traut, T.*; Trautmann, N.*; T$"u$rler, A.*; Ward, A.*; Ward, D. E.*; Wiehl, N.*

Rudolph, D.*; Forsberg, U.*; Golubev, P.*; Sarmiento, L. G.*; Yakushev, A.*; Andersson, L.-L.*; Di Nitto, A.*; D$"u$llmann, Ch. E.*; Gates, J. M.*; Gregorich, K. E.*; Gross, C. J.*; Herzberg, R.-D.*; He${ss}$berger, F. P.*; Khuyagbaatar, J.*; Kratz, J. V.*; Rykaczewski, K.*; Sch$"a$del, M.; ${AA}$berg, S.*; Ackermann, D.*; Block, M.*; Brand, H.*; Carlsson, B. G.*; Cox, D.*; Derkx, X.*; Eberhardt, K.*; Even, J.*; Fahlander, C.*; Gerl, J.*; J$"a$ger, E.*; Kindler, B.*; Krier, J.*; Kojouharov, I.*; Kurz, N.*; Lommel, B.*; Mistry, A.*; Mokry, C.*; Nitsche, H.*; Omtvedt, J. P.*; Papadakis, P.*; Ragnarsson, I.*; Runke, J.*; Schaffner, H.*; Schausten, B.*; Th$"o$rle-Pospiech, P.*; Torres, T.*; Traut, T.*; Trautmann, N.*; T$"u$rler, A.*; Ward, A.*; Ward, D. E.*; Wiehl, N.*

115番元素の$$alpha$$崩壊連鎖を30事象観測し、過去に$$^{288}$$115同位体として報告されている$$alpha$$崩壊連鎖と矛盾しないことを見出した。GEANT4モンテカルロシミュレーションにより高分解能$$alpha$$-光子同時計数実験結果の再現を試みた。この解析手法により、超重核のQ$$_{alpha}$$値や励起準位構造を精度よく導出できるようになる。

Thirty correlated $$alpha$$-decay chains of element 115 were observed, which were consistent with previous observations interpreted as the decay chain of $$^{288}$$115. GEANT4 Monte-Carlo simulations were performed to reproduce high-resolution $$alpha$$-photon coincidence results, which allows one to propose Q$$_{alpha}$$ values and excitation schemes of the superheavy nuclei with unprecedented precision.

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パーセンタイル:51.55

分野:Chemistry, Analytical

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