Battery driven 8 channel pulse height analyzer with compact, single gamma-peak display

Claim 1

An apparatus for the detection and analysis of gamma rays of an element comprising: means for detection including a hand-held unit having the ability to detect and analyze said gamma rays, thereby generating a signal by using the pulse-height frequency-of-occurrence versus pulse-height of said gamma rays, and including means for displaying having the ability to display said signal as a single gamma line of an object for said element; means for shielding resident gamma emissions encasing said means for detection including a lead tube having an open end and a closed end with an observation port located between said open and closed ends allowing visual access to said means for displaying; and means for portable power connected to and receiving a signal from said means for detection and having the ability to amplify said signal from said means for detection.

Claim 2

An apparatus for the detection and analysis of gamma rays of an element comprising: means for detection including a hand-held unit having the ability to detect and analyze said gamma rays, thereby generating a signal by using the pulse-height frequency-of-occurrence versus pulse-height of said gamma rays, and including means for displaying having the ability to display said signal as a single gamma line of an object for said element; means for shielding resident gamma emissions encasing said means for detection including a lead tube having an open end and a closed end with an observation port located between said open and closed ends allowing visual access to said means for displaying; and means for portable power connected to and receiving a signal from said means for detection and having the ability to amplify said signal from said means for detection.

Claim 5

An apparatus for the detection and analysis of gamma rays of an element comprising: a battery powered back-pack; a hand-held detection unit connected to said battery powered back-pack generating an electrical pulse in response to the presence of gamma rays; a gamma shielding tube including an observation port encasing said hand-held detection unit; preamplifier means having the ability to receive said electrical pulse from said hand-held detection unit; amplifier means receiving said electrical pulse from said preamplifier means and amplifying said electrical pulse; discriminator means having the ability to determine if said electrical pulse lies within a predetermined lower and upper level; analog to digital convertor means wherein if said electrical pulse lies within said predetermined lower and upper level said analog to digital convertor means converts and transmits an electrical signal; a line decoder is connected to said analog to digital convertor means and receives said electrical signal from said analog to digital convertor means; a timing and logic circuit receiving a signal from said analog to digital convertor means and sending a signal to said line decoder; at least eight 12 bit counters receiving and transmitting said signal from said line decoder. means for counting connected to said eight bit counters and having the ability to generate a line address signal; and means for displaying mounted through said observation port allowing visual access to said display means having the ability to receive said line address signal from said means for counting and generate a gamma-line display.

Claim 6

An apparatus for the detection and analysis of gamma rays of an element comprising: a battery powered back-pack; a hand-held detection unit connected to said battery powered back-pack generating an electrical pulse in response to the presence of gamma rays; a gamma shielding tube including an observation port encasing said hand-held detection unit; preamplifier means having the ability to receive said electrical pulse from said hand-held detection unit; amplifier means receiving said electrical pulse from said preamplifier means and amplifying said electrical pulse; discriminator means having the ability to determine if said electrical pulse lies within a predetermined lower and upper level; analog to digital convertor means wherein if said electrical pulse lies within said predetermined lower and upper level said analog to digital convertor means converts and transmits an electrical signal; a line decoder is connected to said analog to digital convertor means and receives said electrical signal from said analog to digital convertor means; a timing and logic circuit receiving a signal from said analog to digital convertor means and sending a signal to said line decoder; at least eight 12 bit counters receiving and transmitting said signal from said line decoder. means for counting connected to said eight bit counters and having the ability to generate a line address signal; and means for displaying mounted through said observation port allowing visual access to said display means having the ability to receive said line address signal from said means for counting and generate a gamma-line display.