Multiplicity of γ-rays following fast alpha;-particle emission in the 95 MeV 14N + 159Tb reaction

Inamura, T.; Kojima, Takao; Nomura, T.; Sugitate, T.; Utsunomiya, H.

doi:10.1016/0370-2693(79)90651-8

Cited by 74 publications

(31 citation statements)

References 4 publications

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“…Moreover, the evaporation component is very weak and has been substracted. Two such components have already been observed in 160+ 116Sn system at 125 MeV [-14] for several channels and probably in 14N+ 159Tb at 145 MeV for the (c~3n) channel [12]. This will be further discussed in the last section.…”

Section: Shape Of the ~ Particle Spectra For A Given Reaction Channelmentioning

confidence: 85%

“…As far as the first point is concerned, few experimental results exist and they are as contradictory as the theoretical predictions. With light projectiles on rare earth targets, incomplete fusion reactions seem to come from the highest possible angular momenta near lor [12,13]. At the opposite, with a spherical ~16Sn target, low multiplicities have been measured associated with direct c~ particles indicating a rather low angular momentum window [14].…”

Section: Introductionmentioning

confidence: 96%

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Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

et al. 1982

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Section: Shape Of the ~ Particle Spectra For A Given Reaction Channelmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 96%

Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

et al. 1982

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“…Apart from that, the correlation of energies and angles of charged particle(s) along with the γ multiplicity were measured by Geoffroy et al [29], where the origin of PLF was investigated from undamped noncentral interactions. The noncentral nature of ICF was also emphasized by Trautmann et al [30] and Inamura et al [27,31]. In a review on ICF, Gerschel [32] inferred that the localization of the window also depends on the target deformation.…”

Section: Introductionmentioning

confidence: 91%

Influence of a one-neutron-excess projectile on low-energy incomplete fusion

et al. 2014

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Background: Incomplete fusion has been found to be an important contributor in light heavy-ion (A 20) induced reactions even at slightly above barrier energies. Purpose: For better insight into the dynamics of incomplete fusion, the onset and influence of incomplete fusion need to be investigated in terms of projectile energy (E lab ) and entrance channel mass-asymmetry (μ A ). A rich set of experimental data on incomplete fusion may be useful to correlate the probability of incomplete fusion with the various entrance channel parameters and eventually to develop a theoretical model code for the same. Presently, there is no theoretical model available which can explain low-energy incomplete fusion data consistently. Methods: The excitation functions of complete and incomplete fusion residues populated in the 13 C+ 169 Tm system have been measured using the recoil-catcher activation technique followed by offline γ spectroscopy. The evaporation residues have been identified on the basis of characteristic γ lines and confirmed through the decay-curve analysis. Results: The excitation functions of xn and pxn channels are found to be in good agreement with the statistical model code PACE4; this suggests the population of these channels via complete fusion. Some residues are found to have a contribution from their higher charge isobar precursor decay. The precursor contribution has been deduced from the cumulative cross section using the standard successive radioactive decay formulations. The excitation functions of α-emitting channels are observed to be significantly enhanced as compared to the statistical model code PACE4. This enhancement may be attributed to the contribution from incomplete fusion. The incomplete fusion strength function for 13 C+ 169 Tm is compared with that obtained in the 12 C+ 169 Tm system. It has been found that the one-neutron (1n) excess projectile 13 C (as compared to 12 C) results in a less incomplete fusion contribution due to its relatively large negative alpha-Q value. Recently proposed "alpha-Q-value systematics" seems to explain incomplete fusion data.

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“…Wilczynski et al [29], established ICF as a natural extension of CF for higher values (above crit ) associated with noncentral interactions. The noncentral nature of ICF has also been emphasized by Geoffroy et al [32], Trautmann et al [33], and Inamura et al [34]. In the breakup fusion (BUF) model [35] of Udagawa and Tamura, the projectile is assumed to break up into constituent α clusters (e.g., 12 C → 8 Be + α) within the nuclear field of the target nucleus.…”

Section: Introductionmentioning

confidence: 99%

Large influence of incomplete fusion in12C+159Tb at
Yadav
¹
,
Sharma
²
,
Singh
³

et al. 2012
Phys. Rev. C

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Low energy incomplete fusion has been studied in 12 C+ 159 Tb system at energies ≈ 4-7 MeV/nucleon. The excitation functions of individual reaction channels have been measured using off-line γ spectroscopy, and analyzed in the framework of statistical model code PACE4 based on the concept of equilibrated compound nucleus decay. A significant fraction of incomplete fusion has been found in the production of residues involving α particle(s) in the exit channels. For better insights into the onset and strength of incomplete fusion, the incomplete fusion strength function has been deduced as a function of various entrance channel parameters. Large influence of incomplete fusion has been observed at slightly above barrier energies, and increases smoothly with incident projectile energy. Present results have been compared with the results obtained in the interactions of 12 C with nearby targets to probe the dependence of incomplete fusion on entrance channel mass asymmetry. It has been found that the percentage fraction of incomplete fusion increases linearly with mass asymmetry of interacting partners in the studied mass region.

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Multiplicity of γ-rays following fast alpha;-particle emission in the 95 MeV 14N + 159Tb reaction

Cited by 74 publications

References 4 publications

Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

Influence of a one-neutron-excess projectile on low-energy incomplete fusion

Large influence of incomplete fusion in12C+159Tb at
Yadav
¹
,
Sharma
²
,
Singh
³

et al. 2012
Phys. Rev. C

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Multiplicity of γ-rays following fast alpha;-particle emission in the 95 MeV 14N + 159Tb reaction

Cited by 74 publications

References 4 publications

Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

Direct α particle emission in incomplete fusion reaction on a spherical target124Sn

Influence of a one-neutron-excess projectile on low-energy incomplete fusion

Large influence of incomplete fusion in12C+159Tb atYadav1, Sharma2, Singh3 et al. 2012Phys. Rev. C

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Large influence of incomplete fusion in12C+159Tb at
Yadav
¹
,
Sharma
²
,
Singh
³

et al. 2012
Phys. Rev. C