Employee Name
Parnika Das
Official Address
Room No 217A, HBNI Office (Dean Academic Physical Sciences)
Main Building
VECC, 1/AF Bidhannagar
Kolkata 700 064
India
parnika@vecc.gov.in
Contact Number
+91 33 23182381
Designation
Head, Cryogenic Trap Section
Qualifications
- PhD (2005) : University of Jadavpur, INDIA
- M.Tech. (1990) : Indian Institute of Technology, Delhi, INDIA
- M. Sc. (1989): Indian Institute of Technology, Kanpur, INDIA
- B.Sc. (1987): Miranda House, Delhi University, INDIA
Field of Work
• Development and Experimental measurements using Penning Trap at room temperature and cryogenic temperature
• Study of nuclear decay rate change due to environmental effect
• High precision measurement of electron capture decay rate under compression and its implications
• Reaction cross-section measurements using spectroscopic techniques.
• Structural changes due to extreme conditions like high pressure and high temperature
Publications
1. Effect of lattice compression on the 7Li recoil energy spectrum following electron capture decay of 7Be
A. Ray , P. Das, and A. K. Sikdar
PHYSICAL REVIEW C 110, 035802 (2024)
2. Terrestrial 7Be decay rate and 8B solar neutrino flux,
P. Das and A. Ray,
PHYSICAL REVIEW C 71, 025801 (2005).
3. Frequency mixing property of electron cloud in a Penning trap at room temperature
Joydip Nandi , A.K. Sikdar , Parnika Das, A. Ray
NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH SECTION A: 1056 168647 (2023)
4. Design of a helical resonator with improved figure of merit
Joydip Nandi , A.K. Sikdar , Parnika Das, A. Ray
REVIEW OF SCIENTIFIC INSTRUMENTS 93 (2022) 014706
5. Tantalum doping in HfO2: orthorhombic phase formation at ambient conditions and change in path of pressure-induced structural evolution
S. Pathak, P. Das, M. Sahu, K. L. Pandey, G. Mandal & G. R. Patkare
HIGH PRESSURE RESEARCH 40(3), 434 (2020)