Develop real-time dosimetry concepts and instrumentation for long-term missions. Technical progress report, February 1981 to February 1982 Page: 5 of 22
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FIGURES
1. Detector Gas Gain at a Constant Anode Voltage as a Function
of Time After Sealing the Detector 2
2. Gas Gain Versus Anode Voltage 3
3. Flow Diagram of the Subroutine and Block Diagram of Hardware
for Adjusting the Anode Voltage to Maintain Constant Gas Gain 4
4. Block Diagram of a System Using Two Detectors to Cover a Wide
Range of Event Sizes 5
5. Detailed Block Diagram of the Electronics for the High Gain
Detector . 6
6. Analog to Digital Converter Using CMOS Successive Approximation
Circuit . 7
7. Prototype Portable Instrument with the High Gain Detector 8
8. Typical Curves for the Density of Dose in Lineal Energy for
Neutron and Mixed Field Irradiations . 11
9. Mean and Standard Deviation for Forty Repetitions of
Q = 0.8 + 0.14 yD at Each Value of the Dose 12
10. Mean and Standard Deviation for 40 Samples of Q Determined by
a Fourier Transform Deconvolution of the LET Distribution at
Each Dose 13
TABLES
1. Power Consumption . 8
2. Mean Value for 40 Calculations of Quality 13
4. Milestones . . 15iii
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Braby, L.A. Develop real-time dosimetry concepts and instrumentation for long-term missions. Technical progress report, February 1981 to February 1982, report, May 1, 1982; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1059222/m1/5/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.