activity
20202026
most citedReconstructing the Position and Intensity of Multiple Gamma-Ray Point Sources with a Sparse Parametric Algorithm

27 citations · 72 across the 6 of their papers we have counts for

collaborators

6 papers

physics.ins-det2026

Characterization of GaN:Si and ZnO:Ga for position-resolved fast timing applications

Julius Meyer, Joshua W. Cates, Woon-Seng Choong +7

We present the characterization of two fast, crystalline inorganic scintillators, silicon-doped gallium nitride (GaN:Si) and gallium-doped zinc oxide (ZnO:Ga), and compare their pe…

physics.ins-det2025★ 1 cited

Light-Based Fast Timing in Bulk CsPbBr3 Crystals for TOF-PET and Proton Range Verification

Nicolaus Kratochwil, Leonor Rebolo, Indra R. Pandey +4

Halide perovskite semiconductors such as CsPbBr3 (CLB) are emerging gamma-ray detectors for applications requiring very high energy resolution and potential for fine detector segme…

physics.ins-det2025

Demonstration of a new CLLBC-based gamma- and neutron-sensitive free-moving omnidirectional imaging detector

Jayson R. Vavrek, Ryan Pavlovsky, Victor Negut +4

We have developed a CLLBC-based gamma- and neutron-sensitive multi-channel omnidirectional imaging detector, suitable for handheld or vehicle-borne operation and capable of quantit…

physics.ins-det2021★ 25 cited

Free-moving Quantitative Gamma-ray Imaging

Daniel Hellfeld, Mark S. Bandstra, Jayson R. Vavrek +11

The ability to map and estimate the activity of radiological source distributions in unknown three-dimensional environments has applications in the prevention and response to radio…

physics.ins-det2021★ 19 cited

Improved Gamma-Ray Point Source Quantification in Three Dimensions by Modeling Attenuation in the Scene

M. S. Bandstra, D. Hellfeld, J. R. Vavrek +8

Using a series of detector measurements taken at different locations to localize a source of radiation is a well-studied problem. The source of radiation is sometimes constrained t…

physics.ins-det2020★ 27 cited

Reconstructing the Position and Intensity of Multiple Gamma-Ray Point Sources with a Sparse Parametric Algorithm

Jayson R. Vavrek, Daniel Hellfeld, Mark S. Bandstra +8

We present an experimental demonstration of Additive Point Source Localization (APSL), a sparse parametric imaging algorithm that reconstructs the 3D positions and activities of mu…