Individual isotopic 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.41.547

Cited by 158 publications

(93 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 1 A GeV, cobalt isotopes have not been measured. Figures 5,6,7,8 and 9 show the isotopic distribution cross sections at the five beam energies. Error bars do not appear as they are smaller than the data points.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite

-The spallation residues produced in the bombardment of 56 F e at 1.5, 1.0, 0.75, 0.5 and 0.3 A GeV on a liquid-hydrogen target have been measured using the reverse kinematics technique and the Fragment Separator at GSI (Darmstadt). This technique has permitted the full identification in charge and mass of all isotopes produced with cross-sections larger than 10 −2 mb down to Z = 8. Their individual production cross-sections and recoil velocities at the five energies are presented. Production cross-sections are compared to previously existing data and to empirical parametric formulas, often used in cosmic-ray astrophysics. The experimental data are also extensively compared to different combinations of intra-nuclear cascade and de-excitation models. It is shown that the yields of the lightest isotopes cannot be accounted for by standard evaporation models. The GEMINI model, which includes an asymmetric fission decay mode, gives an overall good agreement with the data. These experimental data can be directly used for the estimation of composition modifications and damages in materials containing iron in spallation sources. They are also useful for improving high precision cosmic-ray measurements.

show abstract

Section: Resultsmentioning

confidence: 99%

“…2 ) subtracting the carbon contribution [5,6,7], or a liquid-hydrogen target (1.52g/cm 2 ) [3,4] at SATURNE. In both cases, the fragments were detected with a telescope of scintillators and Cerenkov counters.…”

Section: Resultsmentioning

confidence: 99%

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite

show abstract

“…Michel et al [16] and Sisterson et al [17] have precisely surveyed the partial Be production cross sections for fragmentation of CNO on hydrogen over a range of energies E "' 10-400 MeV/nucleon. Higher energy crosssection measurements (£.....,365-600 MeV/nucleon, from [18,19]) for p+CNO---+LiBeB reactions have also been made since the compilation of Read and Viola. In addition, measurements for He+CNO---+ LiBeB reactions are now available [18,20]).…”

Section: Propagation Modelmentioning

confidence: 99%

The cosmic-ray contribution to galactic abundances of the light elements: Interpretation of GCR LiBeB abundance measurements from ACE/CRIS

Yanasak¹,

Nolfo²,

Binns³

et al. 2001

AIP Conference Proceedings

View full text Add to dashboard Cite

Abstract. Inelastic collisions between the galactic cosmic rays (GCRs) and the interstellar medium (ISM) are responsible for producing essentially all of the light elements Li, Be, and B (LiBeB) observed in the cosmic rays. Previous calculations (e.g., [1]) have shown that GCR fragmentation can explain the bulk of the existing LiBeB abundance in the present day Galaxy. However, elemental abundances of LiBeB in old halo stars indicate inconsistencies with this explanation. We have used a simple leaky-box model to predict the cosmic-ray elemental and isotopic abundances of LiBeB in the present epoch. We conducted a survey of recent scientific literature on fragmentation cross sections and have calculated the amount of uncertainty they introduce into our model. The predicted particle intensities of this model were compared with high energy (EisM=200-500 MeV/nucleon) cosmic-ray data from the Cosmic Ray Isotope Spectrometer (CRIS), which indicates fairly good agreement with absolute fluxes for Z?:. 5 and relative isotopic abundances for all LiBeB species.

show abstract

“…In addition, secondary reaction chains (e.g. fast 12 C on ambient H producing 11 B and the subsequent interaction of the fast 11 B to produce 10 B or lighter isotopes), which are quite important when HECR with solar or higher metallicity are interacting with a low metallicity ambient medium, have been ignored. We have developed a new code that employs updated cross sections [11,12,13] and incorporates all the possible secondary chains for source particles up to 16 O.…”

Section: Introductionmentioning

confidence: 99%

LiBeB: High and low energy cosmic ray production and comparison with ν induced nucleosynthesis in SNII

et al. 1997

View full text Add to dashboard Cite

We present new calculations of LiBeB production by accelerated particles with various compositions and energy spectra ranging from low energies to relativistic energies, and various ambient medium metallicities (Z/Z ⊙ ). The observed, essentially constant, Be/Fe ratio as a function of Z/Z ⊙ can be best understood if the metallicity of the accelerated particles (high energy or low energy) does not vary much with Z/Z ⊙ . This could be achieved if the particles are accelerated directly from the ejecta of Type II supernovae (SNII) and not from the interstellar medium. Using the observed Be/Fe and the fact that most of the Fe at low Z/Z ⊙ is from SNII, we derive the energy content in accelerated particles per SNII (a few times 10 50 erg). We show that additional 11 B production by neutrinos is consistent with the available data, allowing a neutrino yield from SNII less than or equal to the nominal published yields. We further show that the observed 6 Li at low Z/Z ⊙ suggests that the accelerated particles responsible for the LiBeB at such Z/Z ⊙ are confined to low energies and have a relatively high He/O abundance.

show abstract

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

Cited by 158 publications

References 17 publications

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite

The cosmic-ray contribution to galactic abundances of the light elements: Interpretation of GCR LiBeB abundance measurements from ACE/CRIS

LiBeB: High and low energy cosmic ray production and comparison with ν induced nucleosynthesis in SNII

Contact Info

Product

Resources

About

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

Cited by 158 publications

References 17 publications

Spallation residues in the reactionFe56+pat0.3A,0.5AVillagrasa-Canton1, Boudard2, Ducret3 et al. 2007Phys. Rev. C10051020View full textAdd to dashboardCite

Spallation residues in the reactionFe56+pat0.3A,0.5AVillagrasa-Canton1, Boudard2, Ducret3 et al. 2007Phys. Rev. C10051020View full textAdd to dashboardCite

The cosmic-ray contribution to galactic abundances of the light elements: Interpretation of GCR LiBeB abundance measurements from ACE/CRIS

LiBeB: High and low energy cosmic ray production and comparison with ν induced nucleosynthesis in SNII

Contact Info

Product

Resources

About

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite

Spallation residues in the reactionFe56+pat0.3A,0.5A
Villagrasa-Canton
¹
,
Boudard
²
,
Ducret
³

et al. 2007
Phys. Rev. C
100
5
102
0
View full text Add to dashboard Cite