Measurement of the forward angle 12C+12C fragmentation differential cross sections at 62 MeV/nucleon
Abstract
The present work reports on high-precision measurements of forward-angle fragmentation differential cross sections for the [12]C +[12] C reaction at 62 MeV/nucleon using the FAZIA array. Angular distributions for fragments from Z = 1 to 6 were extracted in the range 2 <= theta_lab <= 8 degrees. Particle identification was achieved by combining the Delta E - E technique with Pulse Shape Analysis, and precise energy calibrations were performed. The results show that for heavier fragments, the angular distributions are better described by the Van Bibber formulation than by the Goldhaber model, consistent with the dominance of a wide component from dissipative processes in the measured angular range. Notably, alpha particles exhibit an anomalously narrow angular distribution, likely originating from the intrinsic cluster structure of [12]C. Comparisons with existing data at the same incident energy show very good agreement, with a more complete set of species reported here, while a kinematic scaling is proposed to compare our data with previous experimental data at 50 and 95 MeV/nucleon.
Versions
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BibTeX
@article{guo2026measurement,
title = {{Measurement of the forward angle $^12$C+$^12$C fragmentation differential cross sections at 62 MeV/nucleon}},
author = {G Guo and G Casini and B.H Sun and S Barlini and A Camaiani and C Frosin and I Lombardo and O Lopez and S Piantelli and I Tanihata and S Terashima and S Valdré and G Verde and F.W Zhao and L Baldesi and B Borderie and R Bougault and C Ciampi and I Dekhissi and J.A Dueñas and Q Fable and F Gramegna and D Gruyer and A Hocine and B Hong and S Kim and T Kozik and S.H Nam and N Le Neindre and J Park and M Parlog and E Vient and M Vigilante and C.J Wang},
journal = {Phys.Rev.C},
year = {2026},
month = sep,
doi = {10.1103/g18c-kwp9},
eprint = {2609.03636},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05738342v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Measurement of the forward angle ^12C+^12C fragmentation differential cross sections at 62 MeV/nucleon
AU - G Guo
AU - G Casini
AU - B.H Sun
AU - S Barlini
AU - A Camaiani
AU - C Frosin
AU - I Lombardo
AU - O Lopez
AU - S Piantelli
AU - I Tanihata
AU - S Terashima
AU - S Valdré
AU - G Verde
AU - F.W Zhao
AU - L Baldesi
AU - B Borderie
AU - R Bougault
AU - C Ciampi
AU - I Dekhissi
AU - J.A Dueñas
AU - Q Fable
AU - F Gramegna
AU - D Gruyer
AU - A Hocine
AU - B Hong
AU - S Kim
AU - T Kozik
AU - S.H Nam
AU - N Le Neindre
AU - J Park
AU - M Parlog
AU - E Vient
AU - M Vigilante
AU - C.J Wang
PY - 2026
DA - 2026/09/03
JO - Phys.Rev.C
DO - 10.1103/g18c-kwp9
UR - https://hal.science/hal-05738342v1
AB - The present work reports on high-precision measurements of forward-angle fragmentation differential cross sections for the [12]C +[12] C reaction at 62 MeV/nucleon using the FAZIA array. Angular distributions for fragments from Z = 1 to 6 were extracted in the range 2 <= theta_lab <= 8 degrees. Particle identification was achieved by combining the Delta E - E technique with Pulse Shape Analysis, and precise energy calibrations were performed. The results show that for heavier fragments, the angular distributions are better described by the Van Bibber formulation than by the Goldhaber model, consistent with the dominance of a wide component from dissipative processes in the measured angular range. Notably, alpha particles exhibit an anomalously narrow angular distribution, likely originating from the intrinsic cluster structure of [12]C. Comparisons with existing data at the same incident energy show very good agreement, with a more complete set of species reported here, while a kinematic scaling is proposed to compare our data with previous experimental data at 50 and 95 MeV/nucleon.
ER -