On the accuracy of the photon-difference method used in high-energy photonuclear experiments

Tesch, K.

doi:10.1016/0029-554x(71)90373-9

Cited by 32 publications

(11 citation statements)

References 8 publications

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“…See text for details. maximum energy E 0 having a spectrum of N(E 0 , k) were unfolded into cross sections per photon of energy k, σ(k), after the method of Tesch [27] with the aid of the LOUHI-82 code [28]. However, as far as the A t -dependence of the energy-integrated cross sections, ͐ σ(k)dk, is concerned, the similar characteristic features of At-dependence are expected in the measured yields Y(E 0 ) without unfolding, because of the following relation,…”

Section: A T -Dependence Of Yieldsmentioning

confidence: 99%

“…The difference of these initial interactions between photons and hadrons is expected to manifest itself in the final features of reactions. Recently Shibata et al [7] reported the result of radiochemical measurements of the yields of 7 Be and 10 Be from nat O, 27 Al, nat Cl, 59 Co, nat Cu, 89 Y, nat Ag and 197 Au in the irradiation with bremsstrahlung with maximum end-point energies (E 0 ) of 250Ϫ1050 MeV. The aim of their work was to search for a possible effect on the yields caused by the difference of the initial interactions between photoreaction and proton reaction at the respective limiting regions observed at E 0 Ͼ 600 MeV and E p Ͼ 2 GeV, where the reaction rate is energy-independent [8].…”

Section: Introductionmentioning

confidence: 99%

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Target-dependence of light fragment production in photonuclear reactions at intermediate energies

Matsumura¹,

Washiyama²,

Haba³

et al. 2000

Radiochimica Acta

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in irradiations with bremsstrahlung having maximum end-point energies up to 1200 MeV were measured by γ-ray spectrometry ( 7 Be, 22 Na, 24 Na and 28 Mg) and accelerator mass spectrometry ( 10 Be). The yields of heavier fragments, 39 Cl,43, 44m, 44g,46,47, 48 Sc, 59 Fe,and 56,57,58,60 Co, were also measured by γ-ray spectrometry in order to survey the relative contribution of fragmentation to spallation and/or fission in the mass yield curves. A distinct difference of the target massdependence of these yields has made it possible to disentangle the contributions of photospallation and photofragmentation processes. It was found that the neutron-to-proton ratios of targets strongly affect the formation of the nuclei by fragmentation as revealed in the yields of the isotopic pairs as well as of the single isotopes. The photon results were compared with those of proton-induced reactions, and no clear effect due to the difference of the initial interactions of photons and protons with nuclei was found in the fragment yields.

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Section: A T -Dependence Of Yieldsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Target-dependence of light fragment production in photonuclear reactions at intermediate energies

Matsumura¹,

Washiyama²,

Haba³

et al. 2000

Radiochimica Acta

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“…The cross sections per photon were deduced from the yield curves with the Tesch smoothing method [16] and are shown in Figs. 2-8.…”

Section: Resultsmentioning

confidence: 99%

Some (?, 1p � n) reactions in118Sn at intermediate energies

et al. 1975

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Abstract. Yield curves for the production of nTgIn, nVmln, 116mlIn, laSmIn, 113rain, 111In, n~ Xl~ l~ 1~ and l~ from enriched 118Sn have been measured by the activation method in the energy region 75-800 MeV. The cross sections have been deduced and for UVIn, U~ and a~ isomeric cross section ratios have been determined. The experimental cross sections are compared to calculations with a cascade-evaporation model and to cross sections calculated with a semi-empirical formula. The isomeric ratios are compared to calculations based on the statistical formalism by Huizenga and Vandenbosch together with cascade-evaporation theory. The (7, P) cross section and isomeric ratio are also compared to calculations based on a direct knock-out formalism.

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“…5 and 6). The yield from 51V has been accurately measured in the energy range 0.25 to 5.0GeV, [1,8,9,10] and the cross section has been deduced using the program due to Tesch [12] (with smoothing parameter 1), which indicates a maximum at 1.7 GeV. The yields from 55Mn and n~tCu are not measured at energies between 1 and 2 GeV, but the yields at higher and lower energies also point to maxima in this region (Refs.…”

Section: Discussionmentioning

confidence: 99%