Unitary scintillation detector and system

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a housing having opposed ends, one of which is open and the second of which is closed by a light-tight aluminum entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settled in a beta scintillator, said aluminum entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open end of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• single photosensitive means located at said open end of said housing, said photosensitive means responsive to said light pulses emitted from said scintillators and producing electrical output signals therefrom;
• and
• pulse discrimination means responsive to said electrical output signals from said photosensitive means for identifying the light pulses from each of said three respective scintillators as determined by the respective and different decay constants of said light pulses.

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a housing having one side open and all other sides closed by a light-tight aluminum entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settled in a beta scintillator, said aluminum entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open side of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• and
• single photosensitive means located at said open side of said housing, said photosensitive means responsive to said light pulses emitted from said scintillators and producing electrical signals therefrom.

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a housing having more than one side open and all other sides closed by a light-tight aluminum entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settled in a beta scintillator, said aluminum entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open sides of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• and
• plural photosensitive means located at said open sides of said housing, said plural photosensitive means operative as a single photosensitive means, responsive to said light pulses emitted from said scintillators, and producing electrical signals therefrom.

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a cylindrical housing having one end open and the remainder of the housing closed by a light-tight aluminum entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settles in a beta scintillator, said aluminum entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open end of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• and
• single photosensitive means located at said open end of said housing, said photosensitive means responsive to said light pulses emitted from said scintillators and producing electrical signals therefrom.

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a cylindrical housing having two ends open and the remainder of the housing closed by a light-tight aluminum entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settled in a beta scintillator, said aluminum entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open ends of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• and
• photosensitive means located at each of said open ends of said housing, said photosensitive means operative as a single photosensitive means, responsive to said light pulses emitted from said scintillators, and producing electrical signals therefrom.

A unitary scintillation detector for sensing the presence of alpha, beta, and gamma radiations comprising:

• a housing having opposed ends, one of which is open and the second of which is closed by an aluminized plastic entrance window, said entrance window capable of passing alpha, beta and gamma radiations into said housing without substantial attenuation;
• three scintillators in series within said housing, said scintillators comprising a monolithic alpha/beta scintillator and a gamma scintillator, said monolithic alpha/beta scintillator comprising an alpha scintillator settled in a beta scintillator, said aluminized plastic entrance window formed on the alpha scintillator end of said monolithic alpha/beta scintillator, said gamma scintillator located adjacent said open end of said housing, said alpha, beta and gamma scintillators successively responsive to said alpha, beta and gamma radiations passing through said entrance window, and each of said scintillators emitting light pulses having different decay constants for said alpha, beta and gamma radiations;
• and
• single photosensitive means located at said open end of said housing, said photosensitive means responsive to said light pulses emitted from said scintillators and producing electrical signals therefrom.