HARSHAW MANUFACTURES A COMPLETE LINE OF SCINTILLATION AND OPTICAL CRYSTALS
SCINTILLATION Mounted Nal(Tl) Crystals C r y s t a l d e t e c t o r s designed for t h e most sophisticated counting problems. Our physics a n d engineering group are available t o assist you in your special detector problems.
STANDARD LINE
More detailed information is contained in our 32-page book, "Harshaw Scintillation Phosphors". We invite you to write for your free copy!
{Hermetically Sealed Crystal Assemblies) •
The a c c e p t e d s t a n d a r d o f the industry
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Improved resolution
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Ready to use plug-in unit
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Proven through years o f service in research, medical a n d industrial a p plications
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Permanently light s e a l e d
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Capsule design facilitates decontamination
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Close dimensional ances
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Harshaw
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unparalleledperformance
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dependability
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consistent g o o d
Large Crystal MATCHED WINDOW LINE
INTEGRAL LINE (Crystal photo multiplier tube combination assembly)
quality
toler-
(Designed primarily for crystals 4 " dia. and larger) •
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guaranteed • •
" S m a l l crystal" p e r f o r m ance achieved through i m p r o v e d optical design Low mass containers Available in s t a n d a r d aluminum or complete low background assemblies Convenient mounting flange Ready to use
Every Harshaw crystal is a p r o d u c t of o u r e x p e r i e n c e in crystal g r o w i n g technology since 1 9 3 6 Other Phosphors Available from The Harshaw Chemical Company ROUGH CUT THALLIUM ACTIVATED SODIUM IODIDE CRYSTAL BLANKS · EUROPIUM ACTIVATED-LITHIUM IODIDE (NORMAL) · EUROPIUM ACTIVATED LITHIUM IODIDE ( 9 6 % Li6 ENRICHED) · THALLIUM ACTIVATED CESIUM IODIDE · THALLIUM ACTIVATED POTASSIUM IODIDE · ANTHRACENE · PLASTIC PHOSPHORS
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OPTICAL
Crystals
For Infrared and Ultra Violet Transmitting Optics "HARSHAW QUALITY" INHERENT IN EACH HARSHAWGROWN CRYSTAL GUARANTEES THE MOST EFFICIENT OPTICAL TRANSMISSION POSSIBLE THROUGH:
1) Negligible light scattering in crystals, permitting higher sensitivity a n d improved resolution
2) Freedom from absorptions caused b y trace impurities in crystal optics 3) M i n i m u m strain " H A R S H A W Q U A L I T Y " meets the dem a n d for uniformity of optical properties such as dispersion a n d refractive index. Prices, specifications, or other information will be sent in answer t o your inquiry. The following infrared and ultra violet transmitting crystals are a v a i l a b l e ; others a r e in the process of development: SODIUM CHLORIDE · SODIUM CHLORIDE MONOCHROMATOR PLATES · POTASSIUM BROMIDE · POTASSIUM BROMIDE PELLET POWDER (through 200 on 325 mesh) · POTASSIUM CHLORIDE · OPTICAL SILVER CHLORIDE · THALLIUM BROMIDE IODIDE · LITHIUM FLUORIDE · LITHIUM FLUORIDE MONOCHROMATOR PLATES · CALCIUM FLUORIDE · BARIUM FLUORIDE · CESIUM BROMIDE • CESIUM IODIDE Additional information on the physical and optical properties of the above crystals is a v a i l a b l e in our 3 6 - p a g e booklet "Synthetic Optical Crystals". Send for your free copy.
THE HARSHAW CHEMICAL CO. Crystal Division
Circle No. 65 on Readers' Service Card 22 A
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ANALYTICAL CHEMISTRY
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Cleveland 6, Ohio
