Kinetic-energy release in the dissociative capture-ionization of CO molecules by 97-MeVAr14+ions

Measurement of kinetic energy release in CO fragmentation by charge-changing collisions of fast heavy ions

“…This trend is also found for N 2 fragmentation in charge-changing collisions of 300 keV Ar 3+ ions [8]. In collisions of 97 MeV Ar 14+ with CO, Watson et al reported that the average values of KER in 1e capture is considerably larger than direct ionization [16]. Also, multiple ionization and the degree of fragmentation are both enhanced largely in 1e capture collisions.…”

“…In electron capture collisions of slow highly charged ions with D 2 , Ali et al [10] observed the three-body fragmentation effect between two D + ions and the projectile ion. In the case of high-energy collisions of 97 MeV Ar 14+ + CO [16], the average value of KER obtained in one-electron capture collisions was found to be considerably larger than that in pure ionization in which the incident charge state does not change. It suggests that the impact parameters relevant to pure ionization are larger than those to one-electron capture in fast highly charged ion impacts.…”

“…In the last few decades collision-induced molecular fragmentation was extensively studied for various combinations between projectile particles and molecules [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The investigation was carried out for the identification of fragment-ion pairs, kinetic energies of the fragments, and the orientation effect on the molecular fragmentation.…”

“…However, such a kind of coincidence experiment is difficult particularly for fast heavy ions. Instead, the molecular fragmentation was investigated under conditions of charge-changing collisions by specifying the final projectile charge state [7][8][9][10][15][16][17] for both slow (v < 1 a.u.) and fast (v > 1 a.u.)…”

Kinetic-energy release inN2fragmentation by charge-changing collisions of2-MeVMizuno1, Yamada2, Tsuchida3 et al. 2010Phys. Rev. A7050View full textAdd to dashboardCite

“…For fast heavy ions, however, b-resolved measurements have rarely been performed so far except those of cold target recoil-ion momentum spectroscopy [1] and those performed under projectile charge-changing conditions [6,[11][12][13][17][18][19][20][21]. In slow collisions of He 2+ and Ar 3+ with N 2 , Ehrich et al [11] found that KER spectra of two fragment N + ions are largely different for individual projectile final charge states.…”