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

Abstract

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.

Measurement of isomeric yield ratios in natIn and natSn with 50, 60, and 70 MeV bremsstrahlung photons

“…Bilow et al [24] measured the isomeric yield ratios of 118 Sn(c,p) 117m,g In reaction at 75, 100, 120, 800 MeV of the bremsstrahlung photons. There is one measurement at 4.5 GeV bremsstrahlung photons by Aleksandryan et al [25].…”

“…[16][17][18][19][20][21][22][23][24][25] in the wide energy range found in the literature are given in Table 3. The total uncertainties in Table 3 consist of two parts listed in Table 4: one is the uncertainty related to the measurement which is calculated from Eq.…”

“…The most recent investigation of the IR of 112m,g In was conducted by Demekhina et al [18] with 30 MeV bremsstrahlung. IR of 117m,g In form 118 Sn was measured with bremsstrahlung by several authors [16,[18][19][20][21][22][23][24][25].…”

Isomeric ratios in photon-induced spallation reactions at intermediate energies

“…At energies above Ev=40 MeV, the initial nuclei and their spin-and energy-distributions were taken from calculations with the cascade program by Chen et al [7]. For photon-induced spallation reactions at intermediate energies, the same formalism has been successfully used by Eriksson and Jonsson for studying the production of 44Sc from heavier nuclei [8] and by Billow et al in the study of some spallation reactions in tlSSn [9]. The characteristics of the cascade residuals were calculated with the cascade program developed by Gabriel and Alsmiller [10].…”

Decay Study of 117In Isomer Pair

“…So far, numerous experiments [1][2][3][4][5][6][7][8][9][10][11][12][13] have been devoted to the investigation of the decay character of the isomer pair of 117 In (the half-lives are roughly 120 and 40 min for the metastable-and ground-states, respectively).…”