Zobrazeno 1 - 10
of 318
pro vyhledávání: '"Joshi, Hem"'
Autor:
R, Renjith Kumar, Geethika, B R, Verma, Nancy, Chaudhari, Vishnu, Dave, Janvi, Joshi, Hem Chandra, Thomas, Jinto
In this work, we report an innovative pump-probe based experimental set up, to study the melting, subsequent evaporation, plasma formation and redeposition in a thin film coated on a glass substrate under different ambient conditions and laser fluenc
Externí odkaz:
http://arxiv.org/abs/2410.07755
Laser-induced breakdown spectroscopy (LIBS) is a well-established technique widely used in fundamental research and diverse practical fields. Polarization-resolved LIBS, a variant of this technique, aims to improve the sensitivity, which is a critica
Externí odkaz:
http://arxiv.org/abs/2410.07390
Polarized emission carries captivating information and can help understand various elementary processes involving collisions within the plasma as well as in radiative transitions. In this work, we investigate the spatio-temporal dependence of the emi
Externí odkaz:
http://arxiv.org/abs/2309.11223
In this work we report a shielded ionization discharge (SID) probe which is conceptualized, designed and implemented for measuring temporal and spatial density profiles in a pulsed molecular beam. The probe detects and provides profiles of neutrals o
Externí odkaz:
http://arxiv.org/abs/2304.09494
Autor:
Thomas, Jinto, Joshi, Hem Chandra
In this review we attempt to provide a brief account of laser induced breakdown spectroscopy (LIBS) methodology and technological developments. We also summarise various methods adopted for exploiting LIBS. Besides, a brief overview of combination of
Externí odkaz:
http://arxiv.org/abs/2302.13272
In this paper, we report experimental investigation to improve the shape of a supersonic nozzle for rarefied flows to generate high axial density at extended distances from the nozzle. The reported work is significant for molecular jet/beam applicati
Externí odkaz:
http://arxiv.org/abs/2212.00416
Autor:
Kumar R., Renjith, Geethika, B.R., Verma, Nancy, Chaudhari, Vishnu, Dave, Janvi, Joshi, Hem Chandra, Thomas, Jinto
Publikováno v:
In Optics and Laser Technology February 2025 181 Part C
In this work, dynamics of multi-charged ions emitted from an aluminum plasma produced by Q switched Nd: Yag laser is studied using time of flight (TOF) measurements from Langmuir Probe (LP) and spectroscopy (STOF) under Ar ambient of 0.02 mbar. The t
Externí odkaz:
http://arxiv.org/abs/2203.12209
In this article, we report rather long time emission ($\sim$ 250 $\mu s$) from aluminum neutrals (Al I) in ns laser produced plasma in the presence of ambient argon. The study is carried out with varying laser power density, background pressure, and
Externí odkaz:
http://arxiv.org/abs/2201.07497
In present work, we report an experimental setup that has been developed to characterize highly under-expanded helium and nitrogen jets confined in a vacuum chamber. The evolution of Zone of Silence (ZOS) is studied and found that experimentally meas
Externí odkaz:
http://arxiv.org/abs/2107.06522