Individual charge changing fragmentation cross sections of relativistic nuclei in hydrogen, helium, and carbon targets

Webber, W. R.; Kish, J. C.; Schrier, D. A.

doi:10.1103/physrevc.41.533

Cited by 124 publications

(66 citation statements)

References 12 publications

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“…There are some instances of overlap between the measurements presented here and those made by Webber et al [14,18], and we present comparisons where data sets are sufficiently similar. Webber et al obtained data on hydrogen and carbon targets, while our chosen targets span the periodic chart to allow for study of target mass dependences in the cross sections.…”

Section: Introductionmentioning

confidence: 66%

“…We first discuss those obtained at large acceptance, where it is typically possible only to measure fragment species with (approximately) Z frag ≥ Z beam /2. These data are readily compared to model predictions, and in some instances, we are also able to compare to previously published data from Webber et al [14] for hydrogen and carbon targets. In the second part of the discussion, we present cross sections for lighter fragments measured with the small-acceptance detectors.…”

Section: Fragment Production Cross Sections At Large Acceptancementioning

confidence: 80%

“…The most relevant published data to which we compare are drawn from a large number of charge-changing cross sections [18] and fragment production cross sections [14] published by Webber et al We have made several previous comparisons to these data; in many cases, the differences are larger than the uncertainties. For instance, in Ref.…”

Section: A Comparison To Previous Measurementsmentioning

confidence: 99%

“…Other high-quality data in the literature (e.g., [14][15][16]) report only fragment cross sections for (approximately) Z beam /2. In contrast, in this and other articles we report the small charge change cross sections and also take the extra step to extract light-fragment production cross sections.…”

Section: Introductionmentioning

confidence: 99%

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Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C

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We report fragmentation cross sections measured at 0• for beams of 14 N, 16 O, 20 Ne, and 24 Mg ions, at energies ranging from 290 MeV/nucleon to 1000 MeV/nucleon. Beams were incident on targets of C, CH2, Al, Cu, Sn, and Pb, with the C and CH2 target data used to obtain hydrogentarget cross sections. Using methods established in earlier work, cross sections obtained with both large-acceptance and small-acceptance detectors are extracted from the data and when necessary corrected for acceptance effects. The large-acceptance data yield cross sections for fragments with charges approximately half of the beam charge and above, with minimal corrections. Cross sections for lighter fragments are obtained from small-acceptance spectra, with more significant, modeldependent corrections that account for the fragment angular distributions. Results for both chargechanging and fragment production cross sections are compared to the predictions of the Los Alamos version of the Quark Gluon String Model (LAQGSM) as well as the NUCFRG2 and PHITS models. For all beams and targets, cross sections for fragments as light as He are compared to the models. Estimates of multiplicity-weighted helium production cross sections are obtained from the data and compared to PHITS and LAQGSM predictions. Summary statistics show that the level of agreement between data and predictions is slightly better for PHITS than for either NUCFRG2 or LAQGSM.

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Section: Introductionmentioning

confidence: 66%

Section: Fragment Production Cross Sections At Large Acceptancementioning

confidence: 80%

Section: A Comparison To Previous Measurementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C

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“…The energy dependence of σ cc for a proton target is of considerable importance to understanding the interstellar production of secondary fragments during cosmic-ray propagation [30]. Figure 3(a) exhibits the p + 12 C σ cc as a function of energy.…”

Section: -2mentioning

confidence: 99%

Parameter-free calculation of charge-changing cross sections at high energy

Suzuki¹,

Horiuchi²,

Terashima³

et al. 2016

Phys. Rev. C

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Charge-changing cross sections at high energies are expected to provide useful information on nuclear charge radii. No reliable theory to calculate the cross section has yet been available. We develop a formula using Glauber and eikonal approximations and test its validity with recent new data on carbon isotopes measured at around 900A MeV. We first confirm that our theory reproduces the cross sections of 12,13,14 C + 12 C consistently with the known charge radii. Next we show that the cross sections of 12−19 C on a proton target are all well reproduced provided the role of neutrons is accounted for. We also discuss the energy dependence of the charge-changing cross sections. DOI: 10.1103/PhysRevC.94.011602 A study of unstable nuclei is one of the fields that have been promoted most intensively. Charge distribution or charge radius, among others, is one of the fundamental quantities to characterize the ground-state properties of nuclei. Electron scattering measurement is ideal for probing the distribution but so far not applicable to short-lived unstable nuclei. We note, however, that the electron-ion scattering experiment will be available in the near future, as planned in Refs. [1,2]. Isotope shift measurement allows us to precisely deduce the charge (proton) radius for some limited unstable nuclei. The measurement of the charge-changing cross section (CCCS) newly appears as a potential means to extract the proton radius since it has the great advantage that the cross section can be measured for almost all nuclei by the same setup as the total reaction or interaction cross section that plays a decisive role in determining the nuclear matter radius [3]. In fact the CCCS has recently been measured to get information on the proton radii of light unstable nuclei [4][5][6][7][8].A theoretical tool for extracting the matter radius from the high-energy total reaction cross sections is well established with the help of Glauber theory [9]. See Refs. [10,11] for a useful application to determining both proton and neutron radii. The reaction mechanism for the charge-changing reaction (CCR) is, however, not well understood and energydependent adjustments are introduced to analyze the CCCS data [4][5][6]12], which makes it difficult to obtain proton radii from the measurement. The purpose of this paper is to show * Present address: Department of Physics, Niigata University, Niigata 950-2181, Japan.that recent new CCCS data of carbon isotopes on both 12 C [13] and proton targets are all satisfactorily reproduced in the framework of the Glauber and eikonal models. The role of neutrons becomes evident for the proton target. This is an important step toward constructing a method of analyzing CCCSs with the use of no adjustable parameters.The total reaction cross section can be calculated bywhere b is a two-dimensional (2D) impact parameter vector perpendicular to the beam (z) direction, |0 = |0 P 0 T is a product of the projectile and target ground-state wave functions, and, e.g., χ p is a sum of the phase-shift functions χ...

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Low Energy Cosmic Ray Nuclei and their Propagation in the Galaxy

Giller

2001

Astrophysical Sources of High Energy Particles and Radiation

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Individual charge changing fragmentation cross sections of relativistic nuclei in hydrogen, helium, and carbon targets

Cited by 124 publications

References 12 publications

Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C

Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C

Parameter-free calculation of charge-changing cross sections at high energy

Low Energy Cosmic Ray Nuclei and their Propagation in the Galaxy

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Individual charge changing fragmentation cross sections of relativistic nuclei in hydrogen, helium, and carbon targets

Cited by 124 publications

References 12 publications

Fragmentation ofN14,O16,Zeitlin1, Guetersloh2, Heilbronn3 et al. 2011Phys. Rev. C

Fragmentation ofN14,O16,Zeitlin1, Guetersloh2, Heilbronn3 et al. 2011Phys. Rev. C

Parameter-free calculation of charge-changing cross sections at high energy

Low Energy Cosmic Ray Nuclei and their Propagation in the Galaxy

Contact Info

Product

Resources

About

Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C

Fragmentation ofN14,O16,
Zeitlin
¹
,
Guetersloh
²
,
Heilbronn
³

et al. 2011
Phys. Rev. C