The Mass Programme at GANIL Using the CSS2 and CIME Cyclotrons

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• 作者：Chartier ; M. ; Mittig ; W. ; Auger ; G. ; Blank ; B. ; Casandjian ; J. M. ; Chabert ; M. ; Ferm&shchcy ; J. ; Fifield ; L. K. ; Gillibert ; A. ; Lalleman ; A. S. ; Lé ; pine Szily ; A. ; Lewitowicz ; M. ; Mac Cormick ; M. ; Moscatello ; M. H. ; Olive
• 刊名：Hyperfine Interactions
• 出版年：2001
• 出版时间：2001
• 年：2001
• 卷：132
• 期：1/4
• 页码：273-279
• 全文大小：80 KB

文摘

The mass-measurement programme at GANIL aims to measure the masses of heavy nuclei close to the N=Z line which is the ideal region to study neutron–proton pairing. An original direct time-of-flight mass-measurement method was developed at GANIL which uses the CSS2 cyclotron as a high-resolution spectrometer. The masses of ions of A=68,76,80 and 100 have been measured with a precision of a few 10$^-6$. Mass measurements will be performed with the new CIME cyclotron of SPIRAL using a similar method based on the measurement of the phase of the accelerated ions for different radio-frequencies. A recently approved experiment will help develop this new technique and aims to measure the mass of $^31$Ar radioactive nuclei with a precision of 10$^-6$.