Alkali metal and alkali earth metal gadolinium halide scintillators

Title: Alkali metal and alkali earth metal gadolinium halide scintillators

The present invention provides for a composition comprising an inorganic scintillator comprising a gadolinium halide, optionally cerium-doped, having the formula A.sub.nGdX.sub.m:Ce; wherein A is nothing, an alkali metal, such as Li or Na, or an alkali earth metal, such as Ba; X is F, Br, Cl, or I; n is an integer from 1 to 2; m is an integer from 4 to 7; and the molar percent of cerium is 0% to 100%. The gadolinium halides or alkali earth metal gadolinium halides are scintillators and produce a bright luminescence upon irradiation by a suitable radiation.

Inventors:: Bourret-Courchesne, Edith; Derenzo, Stephen E.; Parms, Shameka; Porter-Chapman, Yetta D.; Wiggins, Latoria K.

Issue Date:: 2016-08-02

OSTI Identifier:: 1281075

Assignee:: The Regents of the University of California (Oakland, CA) LBNL

Patent Number(s):: 9,404,036

Application Number:: 12/262,132

Contract Number:: AC02-05CH11231

Resource Relation:: Patent File Date: 2008 Oct 30

Research Org:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Full Text
View Full Text

Other works cited in this record:

Modified Bridgman-Stockbarger growth of a novel NLO organic crystal (2-methoxyphenyl)-methylene-propanedinitrile
journal, September 1996

Aggarwal, M. D.; Wang, W. S.; Choi, J.
Journal of Crystal Growth, Vol. 166, Issue 1-4, p. 542-544
DOI: 10.1016/0022-0248(95)00500-5

Morphology and formation of the color core of Bi₁₂SiO₂₀ crystals grown by the Czochralski method
journal, March 1994

Aggarwal, M. D.; Wang, W. S.; Choi, J.
Journal of Crystal Growth, Vol. 137, Issue 1-2, p. 132-135
DOI: 10.1016/0022-0248(94)91260-2

The Travelling Heater Method (THM) for Hg_1−xCd_xTe and related materials
journal, January 1994

Triboulet, R.
Progress in Crystal Growth and Characterization of Materials, Vol. 28, Issue 1-2, p. 85-144
DOI: 10.1016/0960-8974(94)90014-0

Growth and characterization of CdTe single crystals for radiation detectors
journal, October 1999

Funaki, Minoru; Ozaki, Tsutomu; Satoh, Kazuyuki
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 436, Issue 1-2, p. 120-126
DOI: 10.1016/S0168-9002(99)00607-5

Similar records in DOepatents and OSTI.GOV collections:

Lutetium gadolinium halide scintillators

Patent Shah, Kanai S. ; Higgins, William M ; Van Loef, Edgar V ; Glodo, Jaroslaw

Lutetium gadolinium halide scintillators, devices and methods, including a composition having the formula Lu.sub.xGd.sub.(1-x)Halide and a dopant.
Full Text Available July 2010
Alkali or alkaline earth metal promoted catalyst and a process for methanol synthesis using alkali or alkaline earth metals as promoters

Patent Tierney, John W. ; Wender, Irving ; Palekar, Vishwesh M.

The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a heterogeneous catalyst comprising reduced copper chromite impregnated with an alkali or alkaline earth metal. There is thus no need to add a separate alkali or alkaline earth compound. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per passmore »« less
Full Text Available January 1995
Alkali metal hafnium oxide scintillators

Patent Bourret-Courchesne, Edith ; Derenzo, Stephen E. ; Taylor, Scott Edward

The present invention provides for a composition comprising an inorganic scintillator comprising an alkali metal hafnate, optionally cerium-doped, having the formula A₂HfO₃:Ce; wherein A is an alkali metal having a valence of 1, such as Li or Na; and the molar percent of cerium is 0% to 100%. The alkali metal hafnate are scintillators and produce a bright luminescence upon irradiation by a suitable radiation.
Full Text Available May 2018
Gadolinium-loaded gel scintillators for neutron and antineutrino detection

Patent Riddle, Catherine Lynn ; Akers, Douglas William ; Demmer, Ricky Lynn ; Paviet, Patricia Denise ; Drigert, Mark William

A gadolinium (Gd) loaded scintillation gel (Gd-ScintGel) compound allows for neutron and gamma-ray detection. The unique gel scintillator encompasses some of the best features of both liquid and solid scintillators, yet without many of the disadvantages associated therewith. Preferably, the gel scintillator is a water soluble Gd-DTPA compound and water soluble fluorophores such as: CdSe/ZnS (or ZnS) quantum dot (Q-dot) nanoparticles, coumarin derivatives 7-hydroxy-4-methylcoumarin, 7-hydroxy-4-methylcoumarin-3-acetic acid, 7-hydroxycoumarin-3-carboxylic acid, and Alexa Fluor 350 as well as a carbostyril compound, carbostyril 124 in a stable water-based gel, such as methylcellulose or polyacrylamide polymers. The Gd-loaded ScintGel allows for a homogenious distribution ofmore »« less
Full Text Available November 2016
Lanthanum halide scintillators for time-of-flight 3-D pet

Patent Karp, Joel S ; Surti, Suleman

A Lanthanum Halide scintillator (for example LaCl.sub.3 and LaBr.sub.3) with fast decay time and good timing resolution, as well as high light output and good energy resolution, is used in the design of a PET scanner. The PET scanner includes a cavity for accepting a patient and a plurality of PET detector modules arranged in an approximately cylindrical configuration about the cavity. Each PET detector includes a Lanthanum Halide scintillator having a plurality of Lanthanum Halide crystals, a light guide, and a plurality of photomultiplier tubes arranged respectively peripherally around the cavity. The good timing resolution enables a time-of-flight (TOF)more »« less
Full Text Available June 2008