Physics
Scientific paper
Sep 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974phrvc..10.1028b&link_type=abstract
Physical Review C, vol. 10, Issue 3, pp. 1028-1040
Physics
19
Scientific paper
Cross sections differential in energy and angle are presented for the proton, deuteron, triton, and α particles from reactions of 58-MeV α particles on C, O, and 54Fe, and the angle-integrated differential spectra are compared with the predictions of an extended exciton model of pre-equilibrium reactions. The experimental results were obtained with a semiconductor telescope and cover the whole energy range above a few MeV. Except for oxygen, the results are given with uncertainties of 5-10%; for oxygen, relative intensities are valid at a given angle, but the absolute uncertainty is about 50%. The high-energy segment of the spectrum is highly anisotropic for all emitted particles, but for low energies the evaporation mechanism may be important for proton and perhaps α-particle emission. The inelastic α spectra from 54Fe are more similar in shape to previous observations of the 54Fe(p,xp) spectra than to the presently reported 12C(α,xα) results. Comparisons are made between the data and the exciton model assuming an initial configuration of four particles. The model was extended to recognize that for reactions of incident α particles, emitted α particles and even deuteron, triton, and 3He particles may contribute a significant fraction of the pre-equilibrium emission. The empirical internormalization factor for the relative intensity of various exit particles (mass number pβ) is found to be consistent with the (pβ !) value deduced previously from results with incident protons. Using matrix elements deduced from systematics, the predictions for 12C yield qualitatively correct shapes with normalization for the various particle types correct to within a factor of 6. For 54Fe, the magnitude and shape of the predicted integral spectra are good for secondary protons and deuterons, but the predicted spectra fall off far too rapidly at high energies for tritons and α particles. NUCLEAR REACTIONS 12C, 16O, 54Fe, (α, α'x), (α, t x), (α, d x), (α, p x), E=58 MeV; Ge(Li); measured σ(Eα', Et, Ed, Ep, θ) deduced σ(E). 2<~Eα, Et, Ed, Ep<~60 MeV. Comparison with extended exciton model of preequilibrium particle emission.
Bertrand F. E.
Kalbach-Cline C.
Peelle R. W.
No associations
LandOfFree
Differential cross sections for charged-particle emission in reactions of 58-MeV α particles with 12C, 16O, and 54Fe: Comparison with the exciton model of pre-equilibrium particle emission does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Differential cross sections for charged-particle emission in reactions of 58-MeV α particles with 12C, 16O, and 54Fe: Comparison with the exciton model of pre-equilibrium particle emission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential cross sections for charged-particle emission in reactions of 58-MeV α particles with 12C, 16O, and 54Fe: Comparison with the exciton model of pre-equilibrium particle emission will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1584892