Neonization method for stopping, mean excitation energy, straggling, and for total and differential ionization cross sections of CH4, NH3, H2O and FH by impact of heavy projectiles

被引:16
|
作者
Montanari, C. C. [1 ,2 ]
Miraglia, J. E. [1 ,2 ]
机构
[1] UBA, CONICET, Inst Astron & Fis Espacio, Buenos Aires, DF, Argentina
[2] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Buenos Aires, DF, Argentina
关键词
WATER-VAPOR; ELECTRON-EMISSION; LIQUID WATER; PROTON COLLISIONS; ALPHA-PARTICLES; HYDROGEN-IONS; INNER-SHELL; MODEL; GASES; CAPTURE;
D O I
10.1088/0953-4075/47/1/015201
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We propose a neonization method to deal with molecules composed by hydrides of the second row of the periodic table of elements: CH4, NH3, OH2 and FH. This method describes these ten- electron molecules as dressed atoms in a pseudo-spherical potential. We test it by covering most of the inelastic collisional magnitudes of experimental interest: ionization cross sections (total, single and double differential), stopping power, energy-loss straggling and mean excitation energy. To this end, the neonization method has been treated with different collisional formalisms, such as the continuum-distorted-wave-eikonal-initial-state, the first order Born, and the shell-wise local plasma approximations. We show that the present model reproduces the different empirical values with high reliability in the intermediate to high-energy region. We also include the expansion of the spherical wave functions in terms of Slater-type orbitals and the analytic expression for the spherical potentials. This makes it possible in the future to tackle present neonization strategy with other collisional models.
引用
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页数:12
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