Gregory S. Mitchell
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View article: Determination of the gamma-ray asymmetry in the capture of polarized neutrons on hydrogen and deuterium.
Determination of the gamma-ray asymmetry in the capture of polarized neutrons on hydrogen and deuterium. Open
The n+p{yields}d+{gamma} experiment measures the parity-violating directional gamma-ray asymmetry, A{gamma}, with uncertainties of 0.5x10{sup -8} when cold polarized neutrons are captured by para-hydrogen. This precision measurement will d…
View article: Cerenkov luminescence and PET imaging of <sup>90</sup> Y: capabilities and limitations in small animal applications
Cerenkov luminescence and PET imaging of <sup>90</sup> Y: capabilities and limitations in small animal applications Open
The in vivo sensitivity limits and quantification performance of Cerenkov luminescence imaging have been studied using a tissue-like mouse phantom and 90 Y. For a small, 9 mm deep target in the phantom, with no background activity present,…
View article: Imaging Salt Uptake Dynamics in Plants Using PET
Imaging Salt Uptake Dynamics in Plants Using PET Open
Soil salinity is a global environmental challenge for crop production. Understanding the uptake and transport properties of salt in plants is crucial to evaluate their potential for growth in high salinity soils and as a basis for engineer…
View article: First Cerenkov charge-induction (CCI) TlBr detector for TOF-PET and proton range verification
First Cerenkov charge-induction (CCI) TlBr detector for TOF-PET and proton range verification Open
Thallium bromide (TlBr) is a semiconductor material and, simultaneously, a good Cerenkov radiator. The performance of a TlBr detector that integrates two different readouts, the charge induction readout and the detection of Cerenkov light,…
View article: Real‐time whole‐plant dynamics of heavy metal transport in <i>Arabidopsis halleri</i> and <i>Arabidopsis thaliana</i> by gamma‐ray imaging
Real‐time whole‐plant dynamics of heavy metal transport in <i>Arabidopsis halleri</i> and <i>Arabidopsis thaliana</i> by gamma‐ray imaging Open
Heavy metals such as zinc are essential for plant growth, but toxic at high concentrations. Despite our knowledge of the molecular mechanisms of heavy metal uptake by plants, experimentally addressing the real‐time whole‐plant dynamics of …
View article: Real-time whole-plant dynamics of heavy metal transport in<i>Arabidopsis halleri</i>and<i>Arabidopsis thaliana</i>by gamma-ray imaging
Real-time whole-plant dynamics of heavy metal transport in<i>Arabidopsis halleri</i>and<i>Arabidopsis thaliana</i>by gamma-ray imaging Open
Heavy metals such as zinc are essential for plant growth, but toxic at high concentrations. Despite our knowledge of the molecular mechanisms of heavy metal uptake by plants, experimentally addressing the real-time whole-plant dynamics of …
View article: Quantitative assessment of Cerenkov luminescence for radioguided brain tumor resection surgery
Quantitative assessment of Cerenkov luminescence for radioguided brain tumor resection surgery Open
Cerenkov luminescence imaging (CLI) is a developing imaging modality that detects radiolabeled molecules via visible light emitted during the radioactive decay process. We used a Monte Carlo based computer simulation to quantitatively inve…
View article: Evaluation of Matrix9 silicon photomultiplier array for small‐animal PET
Evaluation of Matrix9 silicon photomultiplier array for small‐animal PET Open
Purpose: The MatrixSL‐9‐30035‐OEM (Matrix9) from SensL is a large‐area silicon photomultiplier (SiPM) photodetector module consisting of a 3 × 3 array of 4 × 4 element SiPM arrays (total of 144 SiPM pixels) and incorporates SensL's front‐e…