Cross Sections for the ReactionsTi48(d, 2n)V48

Abstract

750R. M. STERNHEIMER excitation of electron 1 into higher p states, while S\ and d\ are s and d functions, respectively, which describe the excitation of electron 2. The first-order overlap SE^i does not contribute to q' because so(l) is orthogonal to pi{\) and ^'i(l), and similarly po(2) is orthogonal to Si(2) and d\{2). However, \Fi 2 contributes three second-order terms to q f which arise from |j>i(l)] 2 , [j>'i(l)] 2 , and E^i(2)] 2 . Second-order terms of the type ^i 2 are also obtained from the simultaneous Pi m excitation of a core electron in a p state and the valence electron. A similar class of terms is obtained using the P 2 m part of e 2 /r 12 . These terms were not evaluated because of the difficulty of determining the functions of type pi, s h p f h and d\. Thus pi and Si satisfy a set of two simultaneous differential equations. The same applies for p\ and d\.. The numerical solution of these sets would be much more complicated than the solution of Eqs. (5A) and (24A) which involve a single unknown function. However, there seems to be no reason to believe that the two-electron terms would be appreciably larger than the one-electron excitation terms which were shown to be verv small for the case of CI.Measurements have been made of the (d,2n) cross sections of the nuclear species Ti 48 , Cr 52 , and Fe 56 . Results are given for incident deuterons in the energy region 1-20 Mev.

Cross sections for the Reactions 66Zn(d,n)67Ga, 52Cr(d,2n)52gMn and 186 W (d,2n)186Re

“…From Fig. 1 it can be seen that above 12 MeV the present results disagree with all the other measurements [6][7][8][9], which are about 300 mb lower. The maximum cross section for the 52 Cr(d, 2n) S2m +g Mn estimated from the systematics [1] is 900 mb, which is considerably higher then the experimental value of about 550 mb.…”

“…For these reactions the maximum cross sections obtained from published data [5][6][7][8][9][10] do not agree with the predictions of the systematics [1][2][3][4].…”

Neutron and Charged-Particle Induced Cross Sections for Radiochemistry for Isotopes of Scandium, Titanium, Vanadium, Chromium, Manganese, and Iron

“…These two measurements are from (West et al 1993). Three of the activation cross section measurements (specifically the lower cross sections on 48 Ti and 56 Fe and activation cross section for 52 Cr) are from the same author (Burgus et al 1954) and are consistently lower than recent measurements. Excluding these three measurements, our modeled (d,2n) activation cross sections fall within 15% of the measured data.…”

Evaluated activation cross sections of longer-lived radionuclides produced by deuteron induced reactions on natural titanium

“…The shape of the normalised data of [7] (correction was discussed in [2]) agrees but the points lie somewhat higher than the new ones. Data of [8] disagree in shape and have a shift of about 1 MeV to lower energy. The two points of [9] measured on enriched Ti target are too low, while data of [10] are shifted to higher energies.…”

“…Results of [8][9][10] were not taken into account in the new Spline fit calculation. The fit is indicated by solid curve in Fig.…”