12 citations · 38 across the 7 of their papers we have counts for
7 papers
Regenerative Soot-VIII: Sputtering and formation of C1 and C2
Shoaib Ahmad, A. Qayyum, M. N. Akhtar +1
Photoemission spectroscopy of the regenerative soot in neon's glow discharge plasma reveals the contributions from the sputtered atomic and molecular carbon species. We present the…
Carbon cluster diagnostics-I: Direct Recoil Spectroscopy (DRS) of Ar+ and Kr+ bombarded graphite
Shoaib Ahmad, M. N. Akhtar, A. Qayyum +3
Measurements of the energy spectra of multiply charged positive and negative carbon ions recoiling from graphite surface under 100 and 150 keV argon and krypton ion bombardment are…
Carbon cluster diagnostics-II: ExB velocity filter for large carbon clusters
Shoaib Ahmad, B. Ahmad, A. Qayyum +1
An ExB velocity filter is described that has been used for the detection and diagnostics of large carbon clusters Cm (where m is up to ten thousand). The velocity and momentum anal…
Regenerative Soot-III: Role of the kinetic and potential sputtering in the regeneration of the soot
Shoaib Ahmad, M. N. Akhtar
We have used the photoemission spectroscopy of the graphite hollow cathode sooting discharge to identify the roles played by the kinetic and potential sputtering, respectively. Our…
Evolution of clusters in energetic heavy ion bombarded amorphous graphite-II: formation and fragmentation phenomena
A. Qayyum, B. Ahmad, M. N. Akhtar +1
A study has been conducted into the mechanisms of evolution of clusters and their subsequent fragmentation under energetic heavy ion bombardment of amorphous graphite. The evolving…
Evolution of clusters in energetic heavy ion bombarded amorphous graphite-III: Photo-emission and velocity analysis of sputtered carbon clusters
A. Qayyum, M. N. Akhtar, T. Riffat +1
Diagnostics of the carbon atoms, ions, and clusters sputtered from a graphite surface under 10 keV Xe ion bombardments reveals the presence of neutral carbon clusters and positivel…