Abstract
Correlations between emission angles and energies of coincidentα-particle projectile-fragment pairs have been measured for the20Ne+197Au system at 390 MeV beam energy. Theα-particles observed close to the direction of the projectile-like fragment were found to result essentially from sequential projectile decay. Starting from the close-geometry data, the contribution of sequentially emittedα-particles was calculated by Monte Carlo simulations for the entire angular range. For deep inelastic events, the measured angular correlations exhibit a spectacular excess over the calculated correlation. This excess is centred close to the beam direction but on the opposite side of it with respect to the detected projectile-like fragment. The correspondingα-particles have velocities around 85% of the projectile velocity indicating emission in an early reaction phase.
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On leave from: Institute for Nuclear Physics, Cracow, Poland
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Terlau, W., Bürgel, M., Budzanowski, A. et al. Incomplete deep-inelastic scattering in20Ne+197Au collisions at 20 MeV/nucleon. Z. Physik A - Atomic Nuclei 330, 303–310 (1988). https://doi.org/10.1007/BF01294874
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DOI: https://doi.org/10.1007/BF01294874