Schottky Mass Measurements of Cooled Proton-Rich Nuclei at the GSI Experimental Storage Ring
Schottky Mass Measurements of Cooled Proton-Rich Nuclei at the GSI Experimental Storage Ring
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DOI：
10.1103/physrevlett.78.4701
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发表时间：
1997-06
影响因子：
8.6
通讯作者：
T. Radon;T. Kerscher;B. Schlitt;K. Beckert;T. Beha;F. Bosch;H. Eickhoff;B. Franzke;Y. Fujita;H. Geissel;M. Hausmann;H. Irnich;H. Jung;O. Klepper;H. Kluge;C. Kozhuharov;G. Kraus;K. Löbner;G. Münzenberg;Y. Novikov;F. Nickel;F. Nolden;Z. Patyk;H. Reich;C. Scheidenberger;W. Schwab;M. Steck;K. Sümmerer;H. Wollnik
中科院分区：
文献类型：
--
作者：
T. Radon;T. Kerscher;B. Schlitt;K. Beckert;T. Beha;F. Bosch;H. Eickhoff;B. Franzke;Y. Fujita;H. Geissel;M. Hausmann;H. Irnich;H. Jung;O. Klepper;H. Kluge;C. Kozhuharov;G. Kraus;K. Löbner;G. Münzenberg;Y. Novikov;F. Nickel;F. Nolden;Z. Patyk;H. Reich;C. Scheidenberger;W. Schwab;M. Steck;K. Sümmerer;H. Wollnik
High-precision mass measurements of proton-rich isotopes in the range of 60{le}Z{le}84 were performed using the novel technique of Schottky spectrometry. Projectile fragments produced by {sup 209}Bi ions at 930{ital A} MeV were separated with the magnetic spectrometer FRS and stored and cooled in the experimental storage ring (ESR). A typical mass resolving power of 350000 and a precision of 100keV were achieved in the region A{approx}200 . Masses of members of {alpha} chains linked by precise Q{sub {alpha}} values but not yet connected to the known masses were determined. In this way it is concluded that {sup 201}Fr and {sup 197}At are proton unbound. {copyright} {ital 1997} {ital The American Physical Society}
High-precision mass measurements of proton-rich isotopes in the range of 60{le}Z{le}84 were performed using the novel technique of Schottky spectrometry. Projectile fragments produced by {sup 209}Bi ions at 930{ital A} MeV were separated with the magnetic spectrometer FRS and stored and cooled in the experimental storage ring (ESR). A typical mass resolving power of 350000 and a precision of 100keV were achieved in the region A{approx}200 . Masses of members of {alpha} chains linked by precise Q{sub {alpha}} values but not yet connected to the known masses were determined. In this way it is concluded that {sup 201}Fr and {sup 197}At are proton unbound. {copyright} {ital 1997} {ital The American Physical Society}