Ajay Kumar Upadhyay

804 total citations
45 papers, 663 citations indexed

About

Ajay Kumar Upadhyay is a scholar working on Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics and Mechanics of Materials. According to data from OpenAlex, Ajay Kumar Upadhyay has authored 45 papers receiving a total of 663 indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Nuclear and High Energy Physics, 28 papers in Atomic and Molecular Physics, and Optics and 23 papers in Mechanics of Materials. Recurrent topics in Ajay Kumar Upadhyay's work include Laser-Plasma Interactions and Diagnostics (30 papers), Laser-Matter Interactions and Applications (27 papers) and Laser-induced spectroscopy and plasma (23 papers). Ajay Kumar Upadhyay is often cited by papers focused on Laser-Plasma Interactions and Diagnostics (30 papers), Laser-Matter Interactions and Applications (27 papers) and Laser-induced spectroscopy and plasma (23 papers). Ajay Kumar Upadhyay collaborates with scholars based in India, United Kingdom and Taiwan. Ajay Kumar Upadhyay's co-authors include Pallavi Jha, Gaurav Raj, Rohit Kumar Mishra, Shen‐Ming Chen, M. Critchley, Mohammed T. Abou‐Saleh, Kenneth Wilson, Ian Stanley, Philip J. Cowen and J.F.W. Deakin and has published in prestigious journals such as The British Journal of Psychiatry, Journal of Affective Disorders and Sensors and Actuators B Chemical.

In The Last Decade

Ajay Kumar Upadhyay

41 papers receiving 625 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ajay Kumar Upadhyay India 15 394 377 267 111 49 45 663
K.F. McKenna United States 16 511 1.3× 124 0.3× 55 0.2× 223 2.0× 72 1.5× 39 773
Masahiro Nemoto Japan 19 656 1.7× 139 0.4× 32 0.1× 96 0.9× 41 0.8× 81 1.3k
T. Namba Japan 16 285 0.7× 382 1.0× 131 0.5× 118 1.1× 12 0.2× 52 655
R. H. Price United States 14 232 0.6× 150 0.4× 109 0.4× 40 0.4× 16 0.3× 37 620
E. Vandeweert Belgium 13 29 0.1× 145 0.4× 96 0.4× 127 1.1× 8 0.2× 39 620
T. Yamauchi Japan 13 260 0.7× 163 0.4× 38 0.1× 186 1.7× 5 0.1× 38 648
Christopher A Mancuso United States 17 310 0.8× 887 2.4× 52 0.2× 77 0.7× 36 0.7× 51 1.2k
D. A. Fischer United States 15 14 0.0× 175 0.5× 111 0.4× 214 1.9× 11 0.2× 29 842
Dazhi Li China 15 126 0.3× 481 1.3× 26 0.1× 463 4.2× 5 0.1× 83 895

Countries citing papers authored by Ajay Kumar Upadhyay

Since Specialization
Citations

This map shows the geographic impact of Ajay Kumar Upadhyay's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ajay Kumar Upadhyay with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ajay Kumar Upadhyay more than expected).

Fields of papers citing papers by Ajay Kumar Upadhyay

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ajay Kumar Upadhyay. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ajay Kumar Upadhyay. The network helps show where Ajay Kumar Upadhyay may publish in the future.

Co-authorship network of co-authors of Ajay Kumar Upadhyay

This figure shows the co-authorship network connecting the top 25 collaborators of Ajay Kumar Upadhyay. A scholar is included among the top collaborators of Ajay Kumar Upadhyay based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ajay Kumar Upadhyay. Ajay Kumar Upadhyay is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Upadhyay, Ajay Kumar, et al.. (2025). Effect of long-term nutrient management practices on soil physical properties under rice-wheat cropping system. Indian Journal of Soil Conservation. 52(1). 19–25.
2.
Soni, Anil Kumar, et al.. (2024). Superacidic Properties of Protonated PtF n ( n = 1–6) and Their Ability to Form Supersalts: DFT Study. Macromolecular Symposia. 413(1).
3.
Upadhyay, Ajay Kumar, et al.. (2023). Two Factor Authentication using Hardware and Biometrics Factors for IoT Devices and Users. 1–7. 1 indexed citations
4.
Upadhyay, Ajay Kumar, et al.. (2014). High brightness electron beams from density transition laser wakefield acceleration for short-wavelength free-electron lasers. Plasma Physics and Controlled Fusion. 56(9). 95003–95003. 10 indexed citations
5.
Upadhyay, Ajay Kumar, Katherine Sebeck, & John Kieffer. (2012). Spectral mode assignment for binary silicate glasses using molecular dynamics simulations. Journal of Non-Crystalline Solids. 358(23). 3348–3354. 1 indexed citations
6.
Upadhyay, Ajay Kumar, et al.. (2011). Generation of very low energy-spread electron beams using low-intensity laser pulses in a low-density plasma. Physics of Plasmas. 18(3). 3 indexed citations
7.
8.
Jha, Pallavi, et al.. (2009). Propagation of chirped laser pulses in a plasma channel. Physics of Plasmas. 16(6). 18 indexed citations
9.
Jha, Pallavi, R. Singh, & Ajay Kumar Upadhyay. (2009). Pulse distortion and modulation instability in laser plasma interaction. Physics of Plasmas. 16(1). 7 indexed citations
10.
11.
Raj, Gaurav, Ajay Kumar Upadhyay, Rohit Kumar Mishra, & Pallavi Jha. (2008). Electron acceleration by amplified wakefield generated by two copropagating laser pulses in plasma. Physical Review Special Topics - Accelerators and Beams. 11(7). 7 indexed citations
12.
Upadhyay, Ajay Kumar, et al.. (2007). Nonlinear propagation of sinusoidal pulse laser beam in homogeneous plasma. Physics of Plasmas. 14(9). 10 indexed citations
13.
Raj, Gaurav, Ajay Kumar Upadhyay, Rohit Kumar Mishra, & Pallavi Jha. (2007). Nonlinear temporal evolution of plasma waves in backward stimulated Raman scattering. Physics Letters A. 371(1-2). 135–139. 4 indexed citations
14.
Jha, Pallavi, et al.. (2005). Electric and magnetic wakefields in a plasma channel. Physical Review Special Topics - Accelerators and Beams. 8(7). 41 indexed citations
15.
16.
Jha, Pallavi, et al.. (2004). Self-focusing and channel-coupling effects on short laser pulses propagating in a plasma channel. Physics of Plasmas. 11(6). 3259–3263. 29 indexed citations
17.
Jha, Pallavi, et al.. (2004). Relativistic and ponderomotive effects on laser plasma interaction dynamics. Physics of Plasmas. 11(5). 1834–1839. 13 indexed citations
18.
Upadhyay, Ajay Kumar & Ian Stanley. (1997). DETECTION OF DEPRESSION IN PRIMARY CARE: COMPARISON OF TWO SELF-ADMINISTERED SCALES. International Journal of Geriatric Psychiatry. 12(1). 35–37. 17 indexed citations
19.
Upadhyay, Ajay Kumar, et al.. (1991). Blunted growth hormone and prolactin responses to L-tryptophan in depression; a state-dependent abnormality. Journal of Affective Disorders. 21(3). 213–218. 34 indexed citations
20.
Upadhyay, Ajay Kumar, et al.. (1988). Psychiatric Presentation of Third Ventricular Colloid Cyst. The British Journal of Psychiatry. 152(4). 567–569. 13 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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