0000000000654655
AUTHOR
A. C. C. Villari
Mass Measurements with the CSS2 and CIME cyclotrons at GANIL
Commune avec ACEN; This paper presents two original direct mass-measurement techniques developed at GANIL using the CSS2 and CIME cyclotrons as high-resolution mass spectrometers. The mass measurement with the CSS2 cyclotron is based on a time-of-flight method along the spiral trajectory of the ions inside the cyclotron. The atomic mass excesses of 68Se and 80Y recently measured with this technique are -53.958(246) MeV and -60.971(180) MeV, respectively. The new mass-measurement technique with the CIME cyclotron is based on the sweep of the acceleration radio-frequency of the cyclotron. Tests with stable beams have been performed in order to study the accuracy of this new mass-measurement m…
Direct mass measurements ofSe68andY80
The masses of neutron-deficient nuclides near the $N=Z$ line with $A=64\text{\ensuremath{-}}80$ have been determined using a direct time-of-flight technique which employed a cyclotron as a high-resolution spectrometer. The measured atomic masses for $^{68}\mathrm{Se}$ and $^{80}\mathrm{Y}$ were 67.9421(3) u and 79.9344(2) u, respectively. The new values agree with the 2003 Atomic Mass Evaluation. The result for $^{68}\mathrm{Se}$ confirms that this nucleus is a waiting point of the rp-process, and that for $^{80}\mathrm{Y}$ resolves the conflict between earlier measurements. Using the present results and the 2003 Atomic Mass Evaluation compilation, the empirical interaction between the last…
Direct mass measurement of N $\sim$ Z nuclei with A = 64–80 using the CSS2 cyclotron
International audience; The masses of ten neutron-deficient nuclides near the N = Z line with A = 64–80 have been measured with the direct time-of-flight technique using the CSS2 cyclotron as a high-resolution spectrometer. All measured masses agree with the 2003 atomic mass evaluation and are compared to the predictions of the finite range droplet model. The atomic mass excesses obtained for $^{68}$Se and $^{80}$Y are -53.958(246) MeV and -60.971(180) MeV, respectively. The new results for $^{68}$Se and $^(80}$Y are compared to other recent experimental values.