Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
Book Description
Reaction Mechanism of Two-nucleon Transfer Between Heavy Ions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 53
Book Description
Reaction mechanism of two-nucleon transfer between heavy ions
Author: Götz
Publisher:
ISBN:
Category :
Languages : nl
Pages : 51
Book Description
Publisher:
ISBN:
Category :
Languages : nl
Pages : 51
Book Description
A Study of Heavy-Ion Induced Two-Nucleon Transfer Reactions Leading to High Spin States in Light Nuclei Including 1þC, 16O, 18O, 17F and 18F.
Author: G. Proudfoot
Publisher:
ISBN:
Category :
Languages : en
Pages : 235
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 235
Book Description
A Study of One and Two Nucleon Transfer Reactions on C12 Induced by Heavy Ions
Author: W. D. M. Rae
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 236
Book Description
New Recoil Effect in Nucleon Transfer Reactions Between Heavy Ions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In the last few years it has become clear that the effect of the shifting centers of mass (recoil effect) have to be properly incorporated into the theory of single nucleon transfer between nuclei, especially at higher energies. A re-examination of the present theory reveals, however, that there remains a serious problem, which is associated with the so-called spurious center of mass motion in nuclear structure models. In principle the present calculations that purport to treat recoil exactly, nonetheless ought to be corrected for the above defect in the nuclear wave functions that they employ. An exact resolution of the long outstanding problem of spurious center of mass motion in nuclear models has not been obtained, but an approximate procedure for handling the correction to reaction calculations arising from this source has been formulated. The correction has two components. There is a scalar one which corresponds merely to a scaling of the radial coordinate and applies to all reactions. There is also a vector correction which can be cast into a form in which a particle picked up or removed from a definite shell model state appears to occupy a distribution of states having the same parity but differing in angular momentum. This component of the correction applies only to certain reactions. Because of the dispersion in the apparent angular momentum of the transferred nucleon, the reaction can proceed through the transfer of larger units of angular momentum than the normal recoil calculations allow, and the correction therefore is expected to grow with increasing bombarding energy. The scheme developed for handling this effect, which might be referred to as bound state recoil to distinguish it from the recoil effect that the current theories focus on, is presented together with preliminary estimates of its importance.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
In the last few years it has become clear that the effect of the shifting centers of mass (recoil effect) have to be properly incorporated into the theory of single nucleon transfer between nuclei, especially at higher energies. A re-examination of the present theory reveals, however, that there remains a serious problem, which is associated with the so-called spurious center of mass motion in nuclear structure models. In principle the present calculations that purport to treat recoil exactly, nonetheless ought to be corrected for the above defect in the nuclear wave functions that they employ. An exact resolution of the long outstanding problem of spurious center of mass motion in nuclear models has not been obtained, but an approximate procedure for handling the correction to reaction calculations arising from this source has been formulated. The correction has two components. There is a scalar one which corresponds merely to a scaling of the radial coordinate and applies to all reactions. There is also a vector correction which can be cast into a form in which a particle picked up or removed from a definite shell model state appears to occupy a distribution of states having the same parity but differing in angular momentum. This component of the correction applies only to certain reactions. Because of the dispersion in the apparent angular momentum of the transferred nucleon, the reaction can proceed through the transfer of larger units of angular momentum than the normal recoil calculations allow, and the correction therefore is expected to grow with increasing bombarding energy. The scheme developed for handling this effect, which might be referred to as bound state recoil to distinguish it from the recoil effect that the current theories focus on, is presented together with preliminary estimates of its importance.
Interference Phenomena in Heavy Ion Induced Two-nucleon Transfer Reactions
Author: Bent Sørensen
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 4
Book Description
Nuclear Science Abstracts
Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 658
Book Description
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 658
Book Description
Two and Four Nuclon Transfer Reactions Induced by Heavy Ions. [Review].
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Two-nucleon-transfer reactions induced by heavy ions have been particularly successful in pointing out contributions of inelastic two-step processes. They provide a way to investigate the overlap between the wave functions of excited states of the target and residual nuclei. However, calculations of absolute cross sections must take into account sequential transfer. The studies of the (16O, 12C) reaction on 1s--0d- and 0f--1p-shell nuclei are reviewed. The relative spectroscopic factors are in good agreement with those of the (6Li, d) and (12C, 8Be) reactions; hence, this reaction is evidently a good .cap alpha.-transfer reaction. However, some puzzling results are still not understood: excitation of unnatural-parity states in s--d shell-nuclei, the failure of EFR-DWBA calculations in reproducing the angular correlation measurements. Several experimental results showing that the 28Si(18O, 14C)32S reaction is not a good .cap alpha.-transfer reaction are presented. 11 figures, 4 tables.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Two-nucleon-transfer reactions induced by heavy ions have been particularly successful in pointing out contributions of inelastic two-step processes. They provide a way to investigate the overlap between the wave functions of excited states of the target and residual nuclei. However, calculations of absolute cross sections must take into account sequential transfer. The studies of the (16O, 12C) reaction on 1s--0d- and 0f--1p-shell nuclei are reviewed. The relative spectroscopic factors are in good agreement with those of the (6Li, d) and (12C, 8Be) reactions; hence, this reaction is evidently a good .cap alpha.-transfer reaction. However, some puzzling results are still not understood: excitation of unnatural-parity states in s--d shell-nuclei, the failure of EFR-DWBA calculations in reproducing the angular correlation measurements. Several experimental results showing that the 28Si(18O, 14C)32S reaction is not a good .cap alpha.-transfer reaction are presented. 11 figures, 4 tables.
A Study of Heavy-ion Induced Two-nucleon Transfer Reactions Leading to High Spin States in Light Nuclei Including 14C, 16O, 18O, 17F and 18F
Author: Gary Proudfoot
Publisher:
ISBN:
Category : Heavy ions
Languages : en
Pages : 276
Book Description
Publisher:
ISBN:
Category : Heavy ions
Languages : en
Pages : 276
Book Description
A Study of One and Two Nucleon Transfer Reactions on C12 Induced by Heavy Ions
Author: William Dickson Mudie Rae
Publisher:
ISBN:
Category : Carbon
Languages : en
Pages : 400
Book Description
Publisher:
ISBN:
Category : Carbon
Languages : en
Pages : 400
Book Description