Production of radioactive ion beams using the in-flight technique

Abstract

Reactions with a heavy projectile incident on a light target can be used for the efficient in-flight production of secondary radioactive beams. An overview of this technique is given using data on 17 F beams produced via the p(17 O, 17 F)n and d(16 O, 17 F)n reactions. With primary 16,17 O beam currents of 100 pnA, intensities of up to 2ϫ10 6 17 F/s on target were achieved. Using this beam, the p(17 F,␣) 14 O reaction was measured.

The C12(α,γ)O16deBoer1, Görres2, Wiescher3 et al. 2017Rev. Mod. Phys.20881431View full textAdd to dashboardCite

“…This experiment attempted to lessen the effects of β background and contaminant reactions by using the in-flight technique (Harss et al, 2000) to create the 16 N beam. To minimize the energy convolution of the spectrum by the catcher, thin carbon foils were used with thicknesses of only 17(2) µg/cm 2 .…”

Recent results of radioactive beam experiments at ATLAS

“…The reaction rate for the 'Ti(a,p)47V reaction calculated from the experimental data is shown in Fig. 6 together with theoretical reaction rates taken from the literature [24,26,27,28] which are smaller than the experimental rate by factors of about 2-4. This higher rate results in a reduction of the amount of 'Ti produced in supernovae explosions.…”

C+C Fusion Cross Sections Measurements for Nuclear Astrophysics

“…The short-lived isotope beams of 10 C (t 1/2 =19.3s) and 15 C (t 1/2 =2.45s) were generated at the ATLAS accelerator via the in-flight technique using primary beams of 10 tively. The beams were then transported to the MUSIC detector through a 26 • bending magnet and a radio-frequency sweeper system which eliminated most of the scattered primary beam particles [12]. The results of the experiments carried out in the first MUSIC campaign are shown in Fig.…”

“…It can be seen that MUSIC data are in very good agreement with previously reported data giving us confidence in our technique. The fusion excitation functions with radioactive 10 C and 15 C beams on 12 C are reported for the first time.…”

“…In nuclear structure for example, there are reported oscillations in the 12 C+ 12 C fusion cross section data which have not been observed in the neighboring systems [1]. Is therefore important to re-measure some of the data and extract the behavior for the 12 C+ 12 C fusion excitation function as well as for the neighboring carbon systems which have not yet been studied. In nuclear astrophysics, recent calculations suggest that fusion of neutron rich isotopes of C, O, Ne and Mg may play a role in triggering the recently observed explosive stellar events called x-ray superbursts [2][3][4].…”