LEADER 03297nam 2200517 450 001 996418442203316 005 20210218000033.0 010 $a3-030-54241-6 024 7 $a10.1007/978-3-030-54241-2 035 $a(CKB)4100000011457768 035 $a(DE-He213)978-3-030-54241-2 035 $a(MiAaPQ)EBC6352866 035 $a(PPN)250221500 035 $a(EXLCZ)994100000011457768 100 $a20210218d2020 uy 0 101 0 $aeng 135 $aurnn|008mamaa 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aDevelopment of 15 micron cutoff wavelength HgCdTe detector arrays for astronomy /$fMario Cabrera 205 $a1st ed. 2020. 210 1$aCham, Switzerland :$cSpringer,$d[2020] 210 4$dİ2020 215 $a1 online resource (XVII, 121 p. 71 illus., 44 illus. in color.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 311 $a3-030-54240-8 320 $aIncludes bibliographical references. 327 $aChapter1: Introduction -- Chapter2: Test and Data Acquisition Setup -- Chapter3: Dark Current Theory -- Chapter4: Array Characterization -- Chapter5: Phase I Results: 13 m Cuto Wavelength Devices -- Chapter6: Phase II Results: 15 m Cuto Wavelength Devices -- Chapter7: Conclusions and Future Work. 330 $aThis thesis describes advances in the understanding of HgCdTe detectors. While long wave (15 ?m) infrared detectors HgCdTe detectors have been developed for military use under high background irradiance, these arrays had not previously been developed for astronomical use where the background irradiance is a billion times smaller. The main pitfall in developing such arrays for astronomy is the pixel dark current which plagues long wave HgCdTe. The author details work on the success of shorter wavelength development at Teledyne Imaging Sensors, carefully modeling the dark current?reverse bias voltage curves of their 10 ?m devices at a temperature of 30K, as well as the dark current?temperature curves at several reverse biases, including 250 mV. By projecting first to 13 and then 15 ?m HgCdTe growth, values of fundamental properties of the material that would minimize tunneling dark currents were determined through careful modeling of the dark current-reverse bias voltage curves, as well as the dark current-temperature curves. This analysis was borne out in the 13 ?m parts produced by Teledyne, and then further honed to produce the necessary parameters for the 15 ?m growth. The resulting 13 ?m arrays are being considered by a number of ground-based astronomy research groups. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aInfrared array detectors 606 $aMensuration & systems of measurement 606 $aMaterials science 615 0$aInfrared array detectors. 615 0$aMensuration & systems of measurement. 615 0$aMaterials science. 676 $a621.362 700 $aCabrera$b Mario$0842034 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a996418442203316 996 $aDevelopment of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy$91879413 997 $aUNISA LEADER 01673oam 2200493 450 001 9910716743703321 005 20220915114617.0 024 8 $a44-974 035 $a(CKB)5470000002524739 035 $a(OCoLC)1264294075 035 $a(EXLCZ)995470000002524739 100 $a20210819d2021 ua 0 101 0 $aeng 135 $aur||||||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aU.S. policy on Afghanistan $ehearing before the Committee on Foreign Relations, United States Senate, One Hundred Seventeenth Congress, first session, April 27, 2021 210 1$aWashington :$cU.S. Government Publishing Office,$d2021. 215 $a1 online resource (iii, 42 pages) 225 1 $aS. hrg. ;$v117-28 517 $aU.S. policy on Afghanistan 606 $aPolitical stability$zAfghanistan 606 $aInternal security$zAfghanistan 606 $aHuman rights$zAfghanistan 606 $aWomen's rights$zAfghanistan 607 $aAfghanistan$xPolitics and government$y2001- 607 $aUnited States$xMilitary relations$zAfghanistan 607 $aAfghanistan$xMilitary relations$zUnited States 607 $aAfghanistan$xForeign relations$zUnited States 607 $aUnited States$xForeign relations$zAfghanistan 608 $aLegislative hearings.$2lcgft 615 0$aPolitical stability 615 0$aInternal security 615 0$aHuman rights 615 0$aWomen's rights 801 0$bGPO 801 1$bGPO 801 2$bOCLCO 801 2$bGPO 906 $aBOOK 912 $a9910716743703321 996 $aU.S. policy on Afghanistan$93493612 997 $aUNINA