Abstract
A Gas-Sd-CsI hybrid detector telescope is described and its performance assessed in measuring breakup reactions leading to particle unbound states. The telescope consists of an ionisation chamber, a silicon strip detector and a CsI(Tl) scintillator-photodiode detector. The segmentation of the strip detector allows the simultaneous detection, identification and reconstruction of heavy and light ions within a single hybrid telescope. For double hits in the strip detector, crosstalk between the two active strips modifies the measured energies requiring a correction to the energy calibrations. The technique has been extended to the detection of energetic alpha-particles from the decay of Be-8(gs) fragments. Using two telescopes, a measurement of the C-12(Mg-24, O-16 C-12 alpha)alpha reaction at 170 MeV has identified final states where the C-12 ion and alpha-particle originate from unbound states in O-16. The sensitivity to small relative energies between the fragments makes the telescope particularly suitable for the study of near-threshold states of astrophysical interest. (C) 2000 Elsevier Science B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 373-388 |
| Number of pages | 16 |
| Journal | Nuclear instruments & methods in physics research section a-Accelerators spectrometers detectors and associated equipment |
| Volume | 450 |
| Issue number | 2-3 |
| Publication status | Published - 11 Aug 2000 |
Keywords
- O-16+BE-8 BREAKUP
- HEAVY-IONS
- MG-24