NDLI: Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm<formula formulatype=inline><tex Notation=TeX>$^{2+}$</tex> </formula>: Recent Advances

Content Provider	IEEE Xplore Digital Library
Author	Nagarkar, V.V. Thacker, S.C. Gaysinskiy, V. Ovechkina, L.E. Miller, S.R. Cool, S. Brecher, C.
Copyright Year	1963
Abstract	Microcolumnar CsI:Tl remains a highly desirable sensor for digital X-ray imaging due to its superior spatial resolution, bright emission, high absorption efficiency, and ready availability. Despite such obvious advantages, two characteristic properties of CsI:Tl undermine their use in clinical and high speed imaging: a persistent afterglow in its scintillation decay, and a hysteresis effect that distorts the scintillation yield after exposure to high radiation doses. In our earlier work we have discovered that the addition of 0.05 to 0.5 mol percent of Sm²⁺ to crystals of CsI:Tl suppresses their afterglow by a factor of up to 50, even when subjected to a very high exposure of 120 R. This additive also diminishes hysteresis by an order of magnitude, which is a major accomplishment. Consequently, our work is now focused on developing codoped micro- columnar CsI:Tl,Sm films that can potentially combine excellent properties of the current state-of-the-art CsI:Tl films with the reduced afterglow and hysteresis observed in codoped crystals. While our earlier attempts in CsI:Tl,Sm film fabrication, reported at the previous IEEE meeting, demonstrated obvious advantages of the approach, the recent work has succeeded in producing films that show improvement by at least a factor of 7 in afterglow and 150% in brightness compared to the standard CsI:Tl films. We report these important results in this paper, along with other recent advances in film growth and new imaging results.
Sponsorship	IEEE Nuclear and Plasma Sciences Society Computer Applications in Nuclear and Plasma Sciences (CANPS) Lawrence Berkeley Lab. Lawrence Livermore Nat. Lab. APS College of William and Mary Continuous Electron Beam Accelerator Facility NASA Defence Nuclear Agency Sandia National Laboratories Jet Propulsion Laboratory Brookhaven Nat. Lab. Lawrence Livermore Nat. Lab IEEE/NPPS Radiat. Effects Committee Defence Nuclear Agency/DoD Sandia National Laboratories/DOE Jet Propulsion Laboratory/NASA Phillips Lab./DoD
Starting Page	565
Ending Page	569
Page Count	5
File Size	1318241
File Format	PDF
ISSN	00189499
Volume Number	56
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hysteresis Crystals Image sensors Sensor phenomena and characterization X-ray imaging Spatial resolution Electromagnetic wave absorption Availability High-resolution imaging Optical imaging scintillators Scintillator characterization
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Electrical and Electronic Engineering Nuclear Energy and Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm2+: Recent Advances

Effect of Tl$^{+}$ and Sm$^{2+}$ Concentrations on Afterglow Suppression in CsI:Tl, Sm Crystals

A Method for Fabricating High Spatial Resolution Scintillator Arrays

Suppression of Afterglow in CsI(Tl) by Codoping With ${rm Eu}^{2+}$: Fabrication of Microcolumnar Films for High-Resolution High-Speed Imaging

Scintillation Properties of CsI:Tl Crystals Codoped With ${rm Sm}^{2+}$

Low-Afterglow CsI:Tl microcolumnar films for small animal high-speed microCT

Bright Semiconductor Scintillator for High Resolution X-Ray Imaging

High-Performance and Cost-Effective Detector Using Microcolumnar CsI:Tl and SiPM

A High Spatial Resolution Sensor For Thermal Neutron Imaging

Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm$^{2+}$ : Recent Advances

Similar Documents

Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm2+: Recent Advances

Effect of Tl$^{+}$ and Sm$^{2+}$ Concentrations on Afterglow Suppression in CsI:Tl, Sm Crystals

A Method for Fabricating High Spatial Resolution Scintillator Arrays

Suppression of Afterglow in CsI(Tl) by Codoping With ${rm Eu}^{2+}$: Fabrication of Microcolumnar Films for High-Resolution High-Speed Imaging

Scintillation Properties of CsI:Tl Crystals Codoped With ${rm Sm}^{2+}$

Low-Afterglow CsI:Tl microcolumnar films for small animal high-speed microCT

Bright Semiconductor Scintillator for High Resolution X-Ray Imaging

High-Performance and Cost-Effective Detector Using Microcolumnar CsI:Tl and SiPM

A High Spatial Resolution Sensor For Thermal Neutron Imaging

Suppression of Afterglow in Microcolumnar CsI:Tl by Codoping With Sm$^{2+}$ : Recent Advances