Formation of a necklike structure in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>35</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Cl+<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>C and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mm

Larochelle, Y.; Gingras, L.; Beaulieu, Luc; Qian, Xing; Saddiki, Z.; Djerroud, B.; Doré, D.; Laforest, Richard; Roy, R.; Samri, M.; St-Pierre, C.; Ball, G. C.; Bowman, D. R.; Galindo-Uribarri, A.; Hagberg, E.; Hörn, D.; López, Jörge A.; Robinson, Timothy J.

doi:10.1103/physrevc.55.1869

Cited by 32 publications

(24 citation statements)

References 58 publications

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“…For these excitations, corresponding to the region of mid-peripheral collisions, the parallel velocity decreases as the fragment mass decreases. This trend could reflect a greater degree of energy dissipation with decreasing impact parameter and/or the onset of neck emission [33][34][35]. We shall return to this question.…”

Section: General Characterization Of the Reactionsmentioning

confidence: 99%

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α -conjugate neck structures in the collisions of 35 MeV/nucleon Ca40 with Ca40

Schmidt¹,

Cao²,

Kim³

et al. 2017

Phys. Rev. C

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The de-excitation of alpha-conjugate nuclei produced in reactions of 35 MeV/nucleon 40 Ca with 40 Ca has been investigated. Particular emphasis is placed on examining the dynamics of collisions leading to projectile-like fragment exit channels. A general exploration of the reaction systematics reveals the binary dissipative character of the collisions and a hierarchy effect similar to that seen for heavier systems. Investigation of the subset of events characterized by a total α-conjugate mass (α particles plus α-conjugate fragments) equal to 40 and atomic number equal to 20 reveal a dominance of α-conjugate exit channels. The hierarchy effect for these channels leads to the production of α-clustered neck structures with potentially exotic geometries and properties.

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Section: General Characterization Of the Reactionsmentioning

confidence: 99%

“…Such behavior is inconsistent with production of a fully equilibrated compound nucleus. Rather it signals a binary nature of the reaction with neck formation between the quasiprojectile and the quasi-target [34,35]. The breakup of this neck is fast enough that memory of the neck geometry is retained.…”

Section: Collision Dynamics For Al = 40mentioning

confidence: 99%

α -conjugate neck structures in the collisions of 35 MeV/nucleon Ca40 with Ca40

Schmidt¹,

Cao²,

Kim³

et al. 2017

Phys. Rev. C

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“…To investigate this issue, we have performed simple numerical simulations, where we have assumed that the proton and the α-particle come from decay of 5 Li, and that the 5 Li has been emitted from different sources. We require that the proton and the α-particle should come within the angular range of the detectors (0.7…”

Section: Application To Emission From Projectile Residuementioning

confidence: 99%

“…We deduce the kinetic energy of the 5 Li from a Boltzmann distribution, assume that the emission is isotropic in the TLS frame, and boost the 5 Li with the TLS velocity in the laboratory frame. The TLS velocity is taken normally distributed around the mean value of 0.02 c with a standard deviation of 0.01 c. The decay of 5 Li is assumed to be isotropic, while the magnitude of the proton and α velocities in the 5 Li frame is determined from the energy and momentum conservation in the decay. Finally the proton and α velocities are calculated in the frame of the projectile-like residue source (PLS), which is assumed to have the velocity 0.27 c along the beam direction.…”

Section: Application To Emission From Projectile Residuementioning

confidence: 99%

“…For more than 20 years, two-particle intensity interferometry has been used as a probe, yielding a convoluted space-time information that, however, is difficult to disentangle [1,2,3,4]. This is because of the presence of multiple sources, and the competition of non-equilibrium emission processes with equilibrium relaxation modes, leading to a broad range of origins of the measured particles [5,6,7,8,9,10,11,12,13]. It is the purpose of this paper to discuss some of the assumptions made when inferring emission chronology from velocity gated experimental correlation functions.…”

Section: Introductionmentioning

confidence: 99%

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Implications of two-body fragment decay for the interpretation of emission chronology from velocity-gated correlation functions

2006

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From velocity-gated small-angle correlation functions the emission chronology can be deduced for non-identical particles, if the emission is independent. This is not the case for non-identical particles that originate from two-body decay of fragments. Experimental results may contain contributions from both independent emission and two-body decay, so care is needed in interpreting the velocity-gated correlation functions. It is shown that in some special cases, it is still possible to deduce the emission chronology, even if there is a contribution from two-body decay.

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