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Model-independent measurement of isospin diffusion in Ni-Ni systems at intermediate energy

Fuente: arXiv
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Autori principali: Ciampi, C., Frankland, J. D., Gruyer, D., Neindre, N. Le, Mallik, S., Bougault, R., Chbihi, A., Baldesi, L., Barlini, S., Bonnet, E., Borderie, B., Camaiani, A., Casini, G., Dekhissi, I., Dell'Aquila, D., Dueñas, J. A., Fable, Q., Gramegna, F., Gouyet, C., Henri, M., Hong, B., Kim, S., Kordyasz, A., Kozik, T., Kweon, M. J., Lombardo, I., Lopez, O., Manduci, L., Marchi, T., Mazurek, K., Nam, S. H., Park, J., Pârlog, M., Pasquali, G., Piantelli, S., Poggi, G., Rebillard-Soulié, A., Revenko, R., Valdré, S., Verde, G., Vient, E.
Natura: Preprint
Pubblicazione: 2024
Soggetti:
Nuclear Experiment
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author Ciampi, C.
Frankland, J. D.
Gruyer, D.
Neindre, N. Le
Mallik, S.
Bougault, R.
Chbihi, A.
Baldesi, L.
Barlini, S.
Bonnet, E.
Borderie, B.
Camaiani, A.
Casini, G.
Dekhissi, I.
Dell'Aquila, D.
Dueñas, J. A.
Fable, Q.
Gramegna, F.
Gouyet, C.
Henri, M.
Hong, B.
Kim, S.
Kordyasz, A.
Kozik, T.
Kweon, M. J.
Lombardo, I.
Lopez, O.
Manduci, L.
Marchi, T.
Mazurek, K.
Nam, S. H.
Park, J.
Pârlog, M.
Pasquali, G.
Piantelli, S.
Poggi, G.
Rebillard-Soulié, A.
Revenko, R.
Valdré, S.
Verde, G.
Vient, E.
author_facet Ciampi, C.
Frankland, J. D.
Gruyer, D.
Neindre, N. Le
Mallik, S.
Bougault, R.
Chbihi, A.
Baldesi, L.
Barlini, S.
Bonnet, E.
Borderie, B.
Camaiani, A.
Casini, G.
Dekhissi, I.
Dell'Aquila, D.
Dueñas, J. A.
Fable, Q.
Gramegna, F.
Gouyet, C.
Henri, M.
Hong, B.
Kim, S.
Kordyasz, A.
Kozik, T.
Kweon, M. J.
Lombardo, I.
Lopez, O.
Manduci, L.
Marchi, T.
Mazurek, K.
Nam, S. H.
Park, J.
Pârlog, M.
Pasquali, G.
Piantelli, S.
Poggi, G.
Rebillard-Soulié, A.
Revenko, R.
Valdré, S.
Verde, G.
Vient, E.
contents In this work we provide a model-independent experimental evaluation of the degree of isospin equilibration taking place in $^{58,64}$Ni+$^{58,64}$Ni collisions at 32 MeV/nucleon across varying reaction centralities. This result has been obtained by combining the complementary information provided by two different datasets, sharing common characteristics. The first dataset has been acquired with the INDRA setup and has been used to implement a model-independent reconstruction of the impact parameter. The second dataset has been acquired in the first experimental campaign of the coupled INDRA-FAZIA apparatus at GANIL. The neutron-to-proton content of the quasiprojectile remnant measured by FAZIA has been employed as isospin observable. The effect of isospin diffusion has been evidenced by means of the isospin transport ratio, reported as a function of the impact parameter of the collision. The evolution towards isospin equilibration from semiperipheral to more central collisions is clearly extracted. This experimental result, expanding our previous works (Phys. Rev. C 106, 024603 (2022) and Phys. Rev. C 108, 054611 (2023)), can be compared with the predictions of any transport model, and can thus be used to set constraints on the behavior of the symmetry energy term of the nuclear Equation of State at sub- to saturation densities.
format Preprint
id arxiv_https___arxiv_org_abs_2412_13648
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Model-independent measurement of isospin diffusion in Ni-Ni systems at intermediate energy
Ciampi, C.
Frankland, J. D.
Gruyer, D.
Neindre, N. Le
Mallik, S.
Bougault, R.
Chbihi, A.
Baldesi, L.
Barlini, S.
Bonnet, E.
Borderie, B.
Camaiani, A.
Casini, G.
Dekhissi, I.
Dell'Aquila, D.
Dueñas, J. A.
Fable, Q.
Gramegna, F.
Gouyet, C.
Henri, M.
Hong, B.
Kim, S.
Kordyasz, A.
Kozik, T.
Kweon, M. J.
Lombardo, I.
Lopez, O.
Manduci, L.
Marchi, T.
Mazurek, K.
Nam, S. H.
Park, J.
Pârlog, M.
Pasquali, G.
Piantelli, S.
Poggi, G.
Rebillard-Soulié, A.
Revenko, R.
Valdré, S.
Verde, G.
Vient, E.
Nuclear Experiment
In this work we provide a model-independent experimental evaluation of the degree of isospin equilibration taking place in $^{58,64}$Ni+$^{58,64}$Ni collisions at 32 MeV/nucleon across varying reaction centralities. This result has been obtained by combining the complementary information provided by two different datasets, sharing common characteristics. The first dataset has been acquired with the INDRA setup and has been used to implement a model-independent reconstruction of the impact parameter. The second dataset has been acquired in the first experimental campaign of the coupled INDRA-FAZIA apparatus at GANIL. The neutron-to-proton content of the quasiprojectile remnant measured by FAZIA has been employed as isospin observable. The effect of isospin diffusion has been evidenced by means of the isospin transport ratio, reported as a function of the impact parameter of the collision. The evolution towards isospin equilibration from semiperipheral to more central collisions is clearly extracted. This experimental result, expanding our previous works (Phys. Rev. C 106, 024603 (2022) and Phys. Rev. C 108, 054611 (2023)), can be compared with the predictions of any transport model, and can thus be used to set constraints on the behavior of the symmetry energy term of the nuclear Equation of State at sub- to saturation densities.
title Model-independent measurement of isospin diffusion in Ni-Ni systems at intermediate energy
topic Nuclear Experiment
url https://arxiv.org/abs/2412.13648

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