Mail : dhanoj.gupta@vit.ac.in
Help Desk :+91 590 088 55
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Research Area

IONIZATION CROSS SECTION STUDY

The fundamental processes that characterize a physio-chemical reaction in areas like environmental and biological sciences are the electron and positron interactions and ionization of molecules present in such atmospheres. We study the partial and total ionization of various atoms and molecules using the semi-empirical methods and trying to implement the machine learning models to study ionization.

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LOW ENERGY ELECTRON AND POSITRON SCATTERING

Study of low energy electron and positron scattering from atoms and molecules are important due to the resonances that are detected in the low energy regime. The resonances detected could lead to the process of dissociative electron attachment and will help to understand the dissociation mechanism of the molecule itself. Our focus here is to calculate various cross sections and identify the resonances for atoms and molecules.

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ELECTROSTATIC ION BEAM TRAP

The EIBT, a distinctive device, traps keV ions in a confined space using purely electrostatic fields, independent of ion mass. It is commonly used for studying gas-phase ion dynamics, photoionization, and various applications in mass spectrometry. Our goal is to explore the cooling mechanism and mass spectrometry aspects of trapped ions in the EIBT, utilizing particle-in-cell (PIC) numerical techniques.

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About Us

The Theoretical Atomic and Molecular Physics Group

We are the group working broadly on Atomic, Molecular and Optical Physics with main emphasis on collision physics by electron and positron as projectile on various atoms and molecules of applied interest. The collision cross-section data finds various applications in environmental and biological sciences, technological and astrophysical plasmas. We also do study about the electrostatic ion beam traps (EIBT) and its dynamics.
  • Cutting-edge research in Atomic, Molecular, and Optical Physics.
  • Specialization in collision physics using electron and positron as projectiles.
  • Ion trapping and its dynamics using electrostatic ion beam trap.

To study the cooling dynamics and mass spectrometry aspects of ions trapped in an electrostatic ion beam trap

Amount sanctioned: 27.85 Lakhs

Funding agency: SERB, DST, INDIA

Duration: 2nd December 2022 till 1st December 2024

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Teaching Excellence by Dr. Dhanoj Gupta

  • Engineering Physics (BPHY101L) for B.Tech 1st Years

  • Engineering Physics Lab (BPHY101P) for B.Tech 1st Years

  • Research Methodology (RES5001) for M.Sc.
Dr. Dhanoj Gupta with students outside Pearl Research Park
Dr. Dhanoj Gupta with B. Tech Students in class.
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Or Mail Us At: dhanoj.gupta@vit.ac.in
Our Team

Meet our Team

Dhanoj Gupta

Dhanoj Gupta

Team Leader

Assistant Professor of Physics,
Vellore Institute of Technology, Vellore
Postdoc: Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot, Israel.
Postdoc: Researcher, National Fusion Research Institute (NFRI), South Korea.
(Ph.D. IIT-ISM, Dhanbad)

Suriyaprasanth S

Suriyaprasanth S

Junior Research Fellow

Ph.D Student
Ph.D. title: Electron collisions with atoms and molecules

Snigdha Sharma

Snigdha Sharma

Junior Research Fellow

Ph.D Student
Ph.D. title: Theoretical study of electron and positron collision with atoms and molecules

Yurekha SP

Yurekha SP

Junior Research Fellow

Ph.D Student
Ph.D. title: Study of electrostatic ion beam trap as a precise mass spectrometer

Geetha D

Geetha D

Junior Research Fellow

Ph.D Student
Ph.D. title: Charged particles collision studies with atoms and molecules relevant to plasma

Bini Thomas

Bini Thomas

Junior Research Fellow

Ph.D Student
Ph.D. title: Study of electron and positron interaction with atoms and molecules of astrophysical importance

Stay Tuned for latest updates
Stay Tuned for latest updates
Stay Tuned for latest updates
Our Research

Article

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2024

Electron impact partial ionization cross sections: R-carvone, 2-butanol, imidazole, and 2-nitroimidazole
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2023

Electron and Positron Impact Ionization of SF6−nHn(n = 0 − 6); {SCln, SFn−1Cl(n = 1 − 6)} and SF5X(X = CN, CFO)
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2023

Time-dependent dynamics of radio-frequency-bunched ions in an electrostatic ion beam trap.
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2022

Low-energy electron scattering from c-C4F8.
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2021

Particle-in-Cell Techniques for the study of space charge effects in an electrostatic ion beam trap.
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