NIMROD–ISiS, a versatile tool for studying the isotopic degree of freedom in heavy ion collisions

Wuenschel, S.; Hagel, K.; Wada, R.; Natowitz, J. B.; Yennello, S. J.; Kohley, Z.; Bottosso, C.; May, L. W.; Smith, W. B.; Shetty, D. V.; Stein, B. C.; Soisson, S. N.; Prete, G.

doi:10.1016/j.nima.2009.03.187

Cited by 89 publications

(47 citation statements)

References 15 publications

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“…Beams of 64 Zn, 64 Ni and 70 Zn at 35 MeV/nucleon were incident on targets of 64 Zn, 64 Ni and 70 Zn respectively [21,22]. The charged particles and free neutrons produced in the reactions were measured with the NIMROD-ISiS 4π detector array [23]. The granularity and excellent isotopic resolution provided by the array enabled the reconstruction of the quasi-projectile (QP) in mass, charge and excitation energy.…”

Section: Methodsmentioning

confidence: 99%

Experimental signals of a nuclear liquid-gas phase transition

Mabiala

Bonasera

Zheng

et al. 2013

J. Phys.: Conf. Ser.

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Zn at beam energy of 35 MeV/nucleon. Yields of fragments arising from fragmenting quasi-projectiles (QPs) with different neutron-proton asymmetries were analyzed within the framework of the Landau free energy approach. Fits to the free energy of fragments as a function of fragment asymmetry showed three minima, indicating the system to be in a regime of a first-order phase transition. The QP temperature estimates were extracted from the analysis of N=Z fragment data. Additionally, we make use of a recent method based on quantum fluctuations of fermions to derive temperatures and densities of selected QPs. Critical scaling of these observables is found for systems which differ in neutron to proton asymmetry. The derived critical exponent β = 0.35 ± 0.01, belongs to the liquid-gas universality class.

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Section: Methodsmentioning

confidence: 99%

Experimental signals of a nuclear liquid-gas phase transition

Mabiala

Bonasera

Zheng

et al. 2013

J. Phys.: Conf. Ser.

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“…Isotopes for which fewer than 100 counts were obtained in the calculation were not used in the analysis. Isotopes with Z > 17 were not included in the analysis, since Z = 17 corresponds to the highest fragment charge detected with a good isotopic resolution by the NIMROD apparatus [14], used in the experimental campaign. Final fragment yields were obtained by using the standard deexcitation procedure implemented in SMM.…”

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confidence: 99%

Systematic study of the symmetry energy within the approach of the statistical multifragmentation model

et al. 2013

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A systematic study on the effect of secondary decay on the symmetry energy coefficient extracted by isoscaling and the recently proposed isobaric yield ratio methods within the Statistical Multifragmentation Model is performed. The correlations between the input symmetry energy coefficients and the calculated ones from both primary and secondary fragment yields are analysed. Results for secondary fragments show that the best estimation of the input symmetry energy coefficient within SMM is obtained by the isoscaling method, using the yields of light fragments. A comparison to experimental results is also presented.

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“…40 Ca beams produced by the K500 superconducting cyclotron impinged on 40 Ca targets at the energy of 35 MeV/nucleon. The reaction products were measured using a 4π array, NIMRODISiS (Neutron Ion Multidetector for Reaction Oriented Dynamics with the Indiana Silicon Sphere) [25] which consisted of 14 concentric rings covering from 3.6…”

Section: Methodsmentioning

confidence: 99%

“…In addition, the Neutron Ball surrounding the NIMROD-ISiS charged particle array provided information on average neutron multiplicities for different selected event classes. Further details on the detection system, energy calibration, and neutron ball efficiency can be found in [25][26][27].…”

Section: Methodsmentioning

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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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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NIMROD–ISiS, a versatile tool for studying the isotopic degree of freedom in heavy ion collisions

Cited by 89 publications

References 15 publications

Experimental signals of a nuclear liquid-gas phase transition

Experimental signals of a nuclear liquid-gas phase transition

Systematic study of the symmetry energy within the approach of the statistical multifragmentation model

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

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