(e,2e)triple differential cross section of Mg in coplanar symmetric geometry

Calculation of (e, 2e) triple differential cross sections of Mg in coplanar geometry

“…The polarization effect plays an important role at the incident electron energies used in the present investigation in the coplanar symmetric geometry; however the effect of PCI is only significant for few lower incident electron energies. All the previously available calculations [22,34] have reasonable amount of agreement with the experimental data but the present attempt further improves the agreement between theory and measurements. Finally, we conclude that further studies with the proper treatment of polarization, exchange, electron correlation and higher order effects are required to improve the understanding of collision dynamics of alkali atom magnesium in the coplanar symmetric geometry.…”

“…Hitawala et al [22] have calculated TDCS using spin averaged static exchange potential [36] and included target polarization in the standard DWBA formalism. Khajuria et al [34] have reported the results of TDCS using modified semi classical exchange potential [45] and also included PCI using Gamow factor in the standard DWBA formalism. We present the TDCS results of our DWBA and DWBACPE calculations for the ionization of Mg atom at incident electron energies 17.65, 22.65, 27.65, 37.65, 47.65, 57.65 and 67.65 eV which are 5.0 eV to 30.0 eV above ionization threshold.…”

“…The solid circles are experimental data of Murray [28]. Till date there are few attempts, as mentioned in the introduction section of this paper, to explain the features of TDCS of doubly symmetric (e, 2e) processes [22,34] and unequal energy sharing condition [35,36] on Mg (3s) target. All of these calculations have been done in DWBA formalism and have mix degree of agreement with the experimental results.…”

“…Study of (e, 2e) processes on these targets is of prime importance since these are having one and two electrons respectively in the valence shell and after ionization they are left as inert core (alkali target) and one electron in the valence shell above inert core (alkali earth target). Following the experimental results of Murray [28] several theoretical results have been reported for the (e, 2e) processes in coplanar geometry on the alkali and alkali earth targets [22,[29][30][31][32][33][34] and particularly, the study of (e, 2e) processes on Ca atom [22,29,32,33]. Apart from the above mentioned studies Bolognesi et al [35,36] have reported a series of (e, 2e) measurements in unequal energy sharing conditions for the ionization of Mg (3s) target.…”

Triple differential cross section in (e, 2e) collisions for sodium in a coplanar symmetric geometry

“…Subsequently, some modified theoretical models for the above physical effects have been introduced in the calculations to describe the experimental ionization differential cross section of Na, K, Mg, and Ca [16][17][18][19][20][21][22][23][24][25], and much attention has been paid to Na [16][17][18][19]. Srivastava et al reported their study on TDCS of Na together with K by DWBA method [16].…”