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Experimental Studies of Neutron Emission Induced by Heavy-Ion Scattering
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- Nadel-Turonski, Pawel, 1970- (författare)
- Uppsala universitet,Institutionen för kärn- och partikelfysik
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Nilsson, Leif (preses)
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- van den Berg, Adriaan, Dr. (opponent)
- KVI, Groningen
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(creator_code:org_t)
- ISBN 9155457312
- Uppsala : Acta Universitatis Upsaliensis, 2003
- Engelska 103 s.
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Serie: Uppsala Dissertations from the Faculty of Science and Technology, 1104-2516 ; 47
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Abstract
Ämnesord
Stäng
- A beam of 250A MeV 17O ions was scattered from argon and xenon targets. The large excess of fast neutrons compared with statistical model calculations that was observed earlier for xenon, was confirmed and found for argon as well. Analysis and calculations show that a considerable fraction of these neutrons can be interpreted as coming from direct knock-out reactions.The angular distributions do not support the suggestion of using fast heavy ion scattering as a probe for the study of the neutron skin in nuclei. While the basic idea that a heavy projectile tends to sample the neutron wave function near the surface of the nucleus is sound, the measured neutron distribution is not as distinct as suggested by the previous experiment. This makes it difficult to distinguish direct reactions from other channels, such as semi-direct decay of giant resonances.The improvements in the experimental methods have made the concept of using the CELSIUS storage and cooler ring as an internal magnetic spectrometer attractive for other of experiments presently being prepared.
Ämnesord
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Nyckelord
- Nuclear physics
- neutron
- inelastic scattering
- heavy ions
- position sensitive silicon detectors
- storage ring
- cluster-jet target
- differential cross section
- Kärnfysik
- Nuclear physics
- Kärnfysik
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