52 citations · 293 across the 16 of their papers we have counts for
16 papers
Effect of static magnetic island on ITG of ADITYA-U tokamak
Vibhor Kumar Singh, Amal R Biju, Jaya Kumar Alageshan +10
Magnetic islands play a crucial role in regulating plasma confinement in tokamaks by interacting with micro-instabilities, such as the ion temperature gradient (ITG) mode. This wor…
Multiphysics Simulation and First Prototype Development of a Microwave Plasma System for Chemical Vapour Deposition (CVD) Applications
Akash Akash, Sanjeev Kumar Pandey, Venkata Sai Teja Madana +9
With the aid of COMSOL multiphysics simulations, a compact microwave plasma reactor operated at 2.45 GHz frequency has been designed for diamond film deposition. The reactor consis…
Effect of gas pressure on plasma asymmetry and higher harmonics generation in sawtooth waveform driven capacitively coupled plasma discharge
Sarveshwar Sharma, Miles Turner, Nishant Sirse
Using particle-in-cell (PIC) simulation technique, the effect of gas pressure (5-500 mTorr) on the plasma spatial asymmetry, ionization rate, metastable gas densities profile, elec…
Sheath effects with thermal electrons on the resonance frequency of a DC-biased hairpin probe
Pawandeep Singh, Avnish Pandey, Swati Dahiya +3
The dielectric constant of a sheath, whether ionic or electronic, formed around the cylindrical limbs of a hairpin probe, is often considered the same as that of a vacuum. However,…
Experimental investigation of an electronegative cylindrical capacitively coupled geometrically asymmetric plasma discharge with an axisymmetric magnetic field
Swati Dahiya, Narayan Sharma, Shivani Geete +3
In this study, we have investigated the production of negative ions by mixing electronegative oxygen gas with electropositive argon gas in a geometrically asymmetric cylindrical ca…
A systematic investigation of electric field nonlinearity and field reversal in low pressure capacitive discharges driven by sawtooth-like waveforms
Sarveshwar Sharma, Nishant Sirse, Miles M Turner +1
Understanding electron and ion heating phenomenon in capacitively coupled radio-frequency plasma discharges is vital for many plasma processing applications. In this article, using…
Discharge characteristics of a low-pressure geometrically asymmetric cylindrical capacitively coupled plasma with an axisymmetric magnetic field
Swati Dahiya, Pawandeep Singh, Yashashri Patil +3
We investigate the discharge characteristics of a low-pressure geometrically asymmetric cylindrical capacitively coupled plasma discharge with an axisymmetric magnetic field genera…
Flux and energy asymmetry in a low pressure capacitively coupled plasma discharge excited by sawtooth-like waveform -- a harmonic study
Sarveshwar Sharma, Nishant Sirse, Miles M Turner
Control over plasma asymmetry in a low-pressure capacitively coupled plasma (CCP) discharges is vital for many plasma processing applications. In this article, using the particle-i…
Plasma asymmetry, electron and ion energy distribution function in capacitive discharges excited by tailored waveforms
Sarveshwar Sharma, Nishant Sirse, Animesh Kuley +1
Using particle-in-cell simulation technique, we investigate the plasma and ionization asymmetry, electron and ion energy distribution function in capacitive discharges excited by t…
Ion energy distribution function in very high frequency capacitive discharges excited by sawtooth waveform
Sarveshwar Sharma, Nishant Sirse, Animesh Kuley +1
Tailoring ion energy distribution function (IEDF) is vital for advanced plasma processing applications. Capacitively coupled plasma (CCP) discharges excited using non-sinusoidal wa…
High frequency sheath modulation and higher harmonic generation in a low pressure very high frequency capacitively coupled plasma excited by sawtooth waveform
Sarveshwar Sharma, Nishant Sirse, Miles M Turner
A particle-in-cell (PIC) simulation study is performed to investigate the discharge asymmetry, higher harmonic generations and electron heating mechanism in a low pressure very hig…
Driving frequency effect on discharge parameters and higher harmonic generation in capacitive discharges at constant power densities
Sarveshwar Sharma, Nishant Sirse, Animesh Kuley +2
Very high frequency (VHF) driven capacitive discharges are now being increasingly adopted for plasma-based materials processing due to their high processing rates and lower substra…
Electric field non-linearity in very high frequency capacitive discharges at constant electron plasma frequency
Sarveshwar Sharma, Nishant Sirse, Animesh Kuley +1
A self-consistent particle-in-cell simulation study is performed to investigate the effect of driving frequency on the electric field non-linearity, electron heating mechanism and…
Electric field filamentation and higher harmonic generation in a very high frequency capacitive discharges
Sarveshwar Sharma, N. Sirse, A. Sen +2
The effects of the discharge voltage on the formation and nature of electric field transients in a symmetric, collisionless, very high frequency, capacitively coupled plasma are st…
Plasma density and ion energy control via driving frequency and applied voltage in a low pressure capacitively coupled plasma discharge
Sarveshwar Sharma, Abhijit Sen, N. Sirse +2
The dynamical characteristics of a single frequency low pressure capacitively coupled plasma (CCP) device under varying applied RF voltages and driving frequencies are studied usin…
Influence of driving frequency on the metastable atoms and electron energy distribution function in a capacitively coupled argon discharge
S. Sharma, N. Sirse, M. M. Turner +1
One-dimensional particle-in-cell simulation is used to simulate the capacitively coupled argon plasma for a range of driving frequency from 13.56 MHz to 100 MHz. The argon chemistr…