Hydrogen loss under heavy ion irradiation in polymers

The effects of Ni and Mg2Ni interlayer on hydrogenation properties of Pd sandwiched Mg films

“…The two slopes indicate that after certain fluence, the overlapping of ion damaged zones occurs, causing a change in the value of cross-section in agreement with the model proposed by Mittal et al [19].…”

“…where N O is the initial concentration of hydrogen, atoms/cm 2 , is the hydrogen release cross section (cm 2 ) and is the ion fluence (ions/cm 2 ) [19]. The two slopes indicate that after certain fluence, the overlapping of ion damaged zones occurs, causing a change in the value of cross-section in agreement with the model proposed by Mittal et al [19].…”

Dependence of hydrogen released on the charge state of incident ions

“…The characterization of the nano scale damage by ion beams is possible by surface microscopy tools. The information * on the release of hydrogen ions from nano size cylindrical zones and thereby the possibility of measuring the size of ion tracks has been demonstrated by Mittal et al [3]. It has been shown earlier [3] that by measuring the hydrogen evolved from a polymer under heavy ion bombardment, we can deduce the diameter of the damaged zone or ion tracks formed in the polymer.…”

“…The information * on the release of hydrogen ions from nano size cylindrical zones and thereby the possibility of measuring the size of ion tracks has been demonstrated by Mittal et al [3]. It has been shown earlier [3] that by measuring the hydrogen evolved from a polymer under heavy ion bombardment, we can deduce the diameter of the damaged zone or ion tracks formed in the polymer. It has been reported in the literature [4][5][6][7][8] that hydrogen release from a sample under heavy ion bombardment depends strongly upon the charge state of the incident ion.…”

Ion beam induced surface and interface engineering

“…These have been measured by scanning force microscopy and other surface morphology techniques. A novel approach [30] has been used to determine the track diameters in polymers by on-line measurement of hydrogen loss during ion irradiation by on-line ERDA. Hydrogen atoms liberated by the breaking of the bonds combine to form hydrogen molecule, and being lighter gaseous molecule having high diffusivity, escape from the polymer causing reduction in H content.…”