Patent ID: 8101919
Filing Date: 2012-01-24
Classification: G01T

Abstract:
1. A gamma ray spectrometer, comprising: a first scintillator having a first forward facing side, a first rear facing side and a first central portion that extends from said first forward facing side to said first rear facing side; a second scintillator having a higher atomic number than said first scintillator and having a second forward facing side, a second rear facing side and a second central portion, that extends from said second forward facing side to said second rear facing side; wherein said second scintillator further comprises an aperture in said second forward facing side and a well extending into said second central portion from said aperture; wherein said well comprises a well bottom; wherein said first scintillator is located within said well; wherein said first forward facing side and said second forward facing side are facing the same direction; a photodiode fixed within said well and located between said first rear facing side and said well bottom; and a photo detector operatively aligned toward said well bottom and on the opposite side of said well bottom than said photodiode, wherein said photo detector is aligned to detect at least a portion of a first set of particle produced light produced in said second scintillator.