General Lab Information

Sasmit Gokhale

Research Associate, Neutrino and Nuclear Chemistry, Chemistry Division

Sasmit Gokhale

Brookhaven National Laboratory

Chemistry Division
Bldg. 555, Room 388
P.O. Box 5000
Upton, NY 11973-5000

Research Interests

Discovery, synthesis, and characterization of new materials for use in nuclear physics/radiation detection, nuclear nonproliferation, and medical imaging applications

  • Development, characterization, and large scale production of organic liquid scintillators
  • Crystal growth and characterization of compound semiconductors and inorganic metal halide scintillators

Radiation Detector Development and Testing

  • Room temperature semiconductor detectors for high energy resolution gamma-ray spectroscopy
  • Compton suppression system for ultra-low level radioactivity measurements 
  • Neutron and proton radiography for real time 2D imaging
  • Fast neutron detectors for active neutron interrogation and monitoring special nuclear materials

Data analysis and simulation

  • Monte Carlo modeling of particle-detector interaction physics
  • Optical scattering in pure liquids and solutions

Expertise | Research | Education | Appointments | Publications


Expertise

  • Material synthesis and production
  • Radiation detector development
  • Modeling and simulation
  • Data analysis

Research Activities

  • Large scale production of metal-loaded organic liquid scintillators (LS) and water based liquid scintillators (WbLS)
  • QA/QC of LS and WbLS  
  • Developing new techniques for characterizing LA/WbLS
  • Developing new scintillator materials

Education

Ph.D. in Nuclear Engineering, University of Florida, Gainesville, FL.
M.Sc. in Nuclear Engineering, University of Florida, Gainesville, FL.
B.E. in Mechanical Engineering, University of Mumbai, Mumbai,  India.

Professional Appointments

Brookhaven National Laboratory, Chemistry Division, Upton, NY 
Research Associate, 2018-present.

University of Florida, Gainesville, FL 
Post-doctoral Research Associate, Neutron Activation Analysis Laboratory Manager, Lecturer, 2016-2018.

Scintillation Materials Research Center, University of Tennessee, Knoxville, TN 
Post-doctoral Research Associate, 2014-2016.

Selected Publications

  • Gokhale SS, Han H, Baciak JE, Nino JC, Jordan KA (2015) Growth, fabrication, and testing of bismuth tri-iodide semiconductor radiation detectors. Radiation Measurements 74:47–52. doi: 10.1016/j.radmeas.2015.01.015
  • Gokhale SS, Han H, Pelaez O, Baciak JE, Nino JC, Jordan KA (2016) Fabrication and testing of antimony doped bismuth tri-iodide semiconductor gamma-ray detectors. Radiation Measurements 91:1–8. doi: 10.1016/j.radmeas.2016.04.004
  • Gokhale SS, Loyd M, Stand L, Lindsey A, Swider S, Zhuravleva M, Melcher CL (2016) Investigation of the unique degradation phenomenon observed in CsSrBr3: Eu 5% scintillator crystals. Journal of Crystal Growth 452:89–94. doi: 10.1016/j.jcrysgro.2016.03.003
  • Gokhale SS, Stand L, Lindsey A, Koschan M, Zhuravleva M, Melcher CL (2016) Improvement in the optical quality and energy resolution of CsSrBr3: Eu scintillator crystals. Journal of Crystal Growth 445:1–8. doi: 10.1016/j.jcrysgro.2016.04.006
  • Wu Y, Gokhale SS, Lindsey AC, Zhuravleva M, Stand L, Johnson JA, Loyd M, Koschan M, Melcher CL (2016) Toward High Energy Resolution in CsSrI3/Eu2+Scintillating Crystals: Effects of Off-Stoichiometry and Eu2+Concentration. Crystal Growth & Design 16:7186–7193. doi: 10.1021/acs.cgd.6b01375
  • Han H, Hong M, Gokhale SS, Sinnott SB, Jordan K, Baciak JE, Nino JC (2014) Defect Engineering of BiI3 Single Crystals: Enhanced Electrical and Radiation Performance for Room Temperature Gamma-Ray Detection. The Journal of Physical Chemistry C 118:3244–3250. doi: 10.1021/jp411201k
  • Lindsey AC, Zhuravleva M, Wu Y, Stand L, Loyd M, Gokhale S, Koschan M, Melcher CL (2016) Effects of increasing size and changing europium activator concentration in KCaI 3 scintillator crystals. Journal of Crystal Growth 449:96–103. doi: 10.1016/j.jcrysgro.2016.05.045
  • Zhu T, Liang Y, Rolison L, Barker C, Lewis J, Gokhale S, Chandra R, Kiff S, Chung H, Ray H, Baciak JE, Enqvist A, Jordan KA (2017) Improved fission neutron energy discrimination with 4He detectors through pulse filtering. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 848:137–143. doi: 10.1016/j.nima.2016.12.016
  • Akerib DS, Akerlof CW, Akimov DY, Alquahtani A, Alsum SK, et al. (2020) The LUX-ZEPLIN (LZ) experiment. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 953:163047. doi: 10.1016/j.nima.2019.163047
  • Akerib DS, Akerlof CW, Alsum SK, Angelides N, Araújo HM, et al. (2020) Measurement of the gamma ray background in the Davis cavern at the Sanford Underground Research Facility. Astroparticle Physics 116:102391. doi: 10.1016/j.astropartphys.2019.102391
Sasmit Gokhale

Brookhaven National Laboratory

Chemistry Division
Bldg. 555, Room 388
P.O. Box 5000
Upton, NY 11973-5000

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