@article{oai:sucra.repo.nii.ac.jp:00013060,
 author = {Ohtsubo, T and Bosch, F and Geissel, H and Maier, L and Scheidenberger, C and Attallah, F and Beckert, K and Beller, P and Boutin, D and Faestermann, T and Franczak, B and Franzke, B and Hausmann, M and Hellstrom, M and Kaza, E and Kienle, P and Klepper, O and Kluge, HJ and Kozhuharov, C and Litvinov, YA and Munzenberg, G and Munzenberg, G and Nolden, F and Novikov, YN and Portillo, M and Radon, T and Stadlmann, J and Steck, M and Stohlker, T and Summerer, K and Takahashi, K and Weick, H and Winkler, M and 山口, 貴之},
 issue = {5},
 journal = {PHYSICAL REVIEW LETTERS},
 month = {},
 note = {We report the first measurement of a ratio lambda(beta b)/lambda(beta c) of bound-state (lambda(beta b)) and continuum-state (lambda(beta c)) beta(-)-decay rates for the case of bare Tl-207(81+) ions. These ions were produced at the GSI fragment separator FRS by projectile fragmentation of a Pb-208 beam. After in-flight separation with the B rho-Delta E-B rho method, they were injected into the experimental storage-ring ESR at an energy of 400.5A MeV, stored, and electron cooled. The number of both the Tl-207(81+) ions and their bound-state beta(-)-decay daughters, hydrogenlike Pb-207(81+) ions, were measured as a function of storage time by recording their Schottky-noise intensities. The experimental result, lambda(beta b)/lambda(beta c)=0.188(18), is in very good agreement with the value of 0.171(1) obtained from theory employing spectra of allowed transitions., text, application/pdf},
 pages = {052501-1--052501-4},
 title = {Simultaneous measurement of beta(-) decay to bound and continuum electron states},
 volume = {95},
 year = {2005},
 yomi = {ヤマグチ, タカユキ}
}