12 citations · 39 across the 10 of their papers we have counts for
10 papers
Capture of a diffusing lamb by a diffusing lion when both return home
R. K. Singh, Sadhana Singh
A diffusing lion pursues a diffusing lamb when both of them are allowed to get back to their homes intermittently. Identifying the system with a pair of vicious random walkers, we…
Cavitation and charge separation in laser-produced copper and carbon plasma in transverse magnetic field
Narayan Behera, Ajai Kumar, R. K. Singh
In the present work, we report the dynamics and geometrical features of the plasma plume formed by the laser ablation of copper and graphite (carbon) targets in the presence of dif…
Backbone diffusion and first-passage dynamics in a comb structure with confining branches under stochastic resetting
R. K. Singh, T. Sandev, A. Iomin +1
We study the diffusive motion of a test particle in a two-dimensional comb structure consisting of a main backbone channel with continuously distributed side branches, in the prese…
A 3D Magnetohydrodynamic simulation for the propagation of plasma plume transverse to applied magnetic field
Bhavesh G. Patel, Narayan Behera, R. K. Singh +2
We have carried out a 3D ideal-MHD (Magnetohydrodynamic) simulation to study the evolution of laser generated plasma plume in a moderate external magnetic field (0.13 T) oriented p…
Numerical study of the effect of mass of the background gas on the lateral interactions of two plasma plumes at high pressure
Sharad K. Yadav, R. K. Singh
The characteristic of the lateral interaction of two plasma plumes in background gas at high pressures was reported in recent publication [Yadav {\it et. al.}, J. Phys. D: App…
Transport and tumbling of polymers in viscoelastic shear flow
Sadhana Singh, R. K. Singh, Sanjay Kumar
Polymers in shear flow are ubiquitous and we study their motion in a viscoelastic fluid under shear. Employing dumbbells as representative, we find that the center of mass motion f…
Study of diamagnetism in laser-produced plasma using B-dot probe
Narayan Behera, R. K. Singh, G. Veda Prakash +3
Time-varying diamagnetism in laser-produced plasma moving across the transverse magnetic field with different field strengths has been studied using fast imaging and magnetic probe…
Effect of magnetic field on the laterally colliding plasma plumes
Alamgir Mondal, R. K. Singh, Vishnu Chaudhari +1
An experimental investigation of laser produced colliding plasma of aluminium target in the presence of external magnetic field in vacuum is done. Characteristic parameters and lin…
Compositional analysis of laser produced plasma plume in front and back ablation geometries
Alamgir Mondal, R. K. Singh, H. C. Joshi
Composition analysis of LiF-C thin film for neutral and ionic contributions in Front Ablation (FA) and Back Ablation (BA) geometries in vacuum and 2\times10-1 mbar argon has been d…
Kramers problem for a dimer: effect of noise correlations
R. K. Singh
Kramers problem for a dimer in a bistable piecewise linear potential is studied in the presence of correlated noise processes. The distribution of first passage times from one mini…