Charge-changing cross section measurements of atomic nuclei and charge radii

Sun, B.

doi:10.1360/tb-2020-0906

Cited by 3 publications

(21 citation statements)

References 17 publications

(24 reference statements)

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“…Since 2015, we have performed a new experimental campaign in the energy range of 200-500 MeV/nucleon, aiming to determine the EFCSs of more than ten stable isotopes. Here we report the first result of 28 Si on carbon at 218 MeV/nucleon. The experiment overview is described in Sec.…”

Section: Introductionmentioning

confidence: 85%

“…The target was placed at the entrance of the Second Radioactive Ion Beam Line in Lanzhou (RIBLL2) [22]. The secondary 28 Si beam produced via projectile fragmentation was then separated in flight by setting the first half of RIBLL2 to a magnetic rigidity (Bρ) of 5.03 Tm, and transported to the External Target Facility (ETF). There, the 28 Si beam was directed into a natural carbon target with the thickness of 1.86 g/cm 2 .…”

Section: Methodsmentioning

confidence: 99%

“…1. The time of flight (TOF) of 28 Si beam from the first dispersive focal plane (F1) of RI-BLL2 to ETF was determined event by event by a pair of fast timing plastic scintillators placed at F1 and ETF, respectively. The corresponding flight length is approximately 26 m. The intrinsic TOF resolution achieved from detectors is as low as 80 ps (σ) [22][23][24][25].…”

Section: Methodsmentioning

confidence: 99%

“…Over the last two decades, experimental studies on the fragmentation of 28 Si have been performed at various energies by using different detection techniques in laboratories worldwide [3][4][5][6][7][8][9]. This isotope offers an ideal benchmark dataset to check the consistency of experiments, to evaluate the model reliability, and further to investigate the nuclear structure underneath the heavyion collisions.…”

Section: Introductionmentioning

confidence: 99%

“…This isotope offers an ideal benchmark dataset to check the consistency of experiments, to evaluate the model reliability, and further to investigate the nuclear structure underneath the heavyion collisions. Nevertheless, we are aware that although experimental data for 28 Si are relatively rich, different energy-dependent behaviors were reported. Moreover, the elemental fragmentation cross sections (EFCSs) performed at similar incident energies for the same reaction system [3,5,7] present a large discrepancy by up to about 40%, albeit with similar heavy-ion detector systems.…”

Section: Introductionmentioning

confidence: 99%

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New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

Li,

Su,

Sun

et al. 2023

Preprint

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Elemental fragmentation cross sections (EFCSs) of stable and unstable nuclides have been investigated with various projectile-target combinations at a wide range of incident energies. These data are critical to constrain and develop the theoretical reaction models and to study the propagation of galactic cosmic rays (GCR). In this work, we present a new EFCS measurement for 28 Si on carbon at 218 MeV/nucleon performed at the Heavy Ion Research Facility (HIRFL-CSR) complex in Lanzhou. The impact of the target thickness has been well corrected to derive an accurate EFCS. Our present results with charge changes ∆Z = 1-6 are compared to the previous measurements and to the predictions from the models modified EPAX2, EPAX3, FRACS, ABRABLA07, NUCFRG2, and IQMD coupled with GEMINI (IQMD+GEMINI). All the models fail to describe the odd-even staggering strength in the elemental distribution, with the exception of the IQMD+GEMINI model, which can reproduce the EFCSs with an accuracy of better than 3.5% for ∆Z ≤ 5. The IQMD+GEMINI analysis shows that the odd-even staggering in EFCSs occurs in the sequential statistical decay stage rather than in the initial dynamical collision stage. This offers a reasonable approach to understand the underlying mechanism of fragmentation reactions.

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Section: Introductionmentioning

confidence: 85%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

Li,

Su,

Sun

et al. 2023

Preprint

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Charge-changing cross section measurements of 300 MeV/nucleon ²⁸Si on carbon and data analysis*

et al. 2023

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Charge-changing cross section ($\sigma_{\text{cc}}$) measurements via the transmission method have made important progress recently aiming to determine the charge radii of exotic nuclei. In this work, we report a new $\sigma_{\text{cc}}$ measurement of 299(9) MeV/nucleon $^{28}$Si on carbon at the second Radioactive Ion Beam Line in Lanzhou (RIBLL2) and describe the data analysis procedure in detail. This procedure is essential to evaluate the systematic uncertainty in the transmission method.The determined $\sigma_{\mathrm{cc}}$ of 1125(11) mb is found to be consistent with the existing data at similar energies. The present work will serve as a reference in the $\sigma_{\text{cc}}$ determinations at RIBLL2.

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New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon Si28 on a carbon target

Li¹,

Su²,

Sun³

et al. 2023

Phys. Rev. C

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Charge-changing cross section measurements of atomic nuclei and charge radii

Cited by 3 publications

References 17 publications

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

Charge-changing cross section measurements of 300 MeV/nucleon ²⁸Si on carbon and data analysis*

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon Si28 on a carbon target

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Charge-changing cross section measurements of atomic nuclei and charge radii

Cited by 3 publications

References 17 publications

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon 28 Si on a carbon target

Charge-changing cross section measurements of 300 MeV/nucleon 28Si on carbon and data analysis*

New measurement of the elemental fragmentation cross sections of 218 MeV/nucleon Si28 on a carbon target

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Charge-changing cross section measurements of 300 MeV/nucleon ²⁸Si on carbon and data analysis*