General Information

Serial #

8125 EX

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

GLASS, METAL AND SYNTHETIC COMPONENTS.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

14.0 cm

Width

6.0 cm

Height

N/A

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Physics

Category

Light & electromagnetic radiation

Sub-Category

N/A

Manufacturer

AKA

DUMONT

Country

United States of America

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Quebec

Period

THIS TUBE PRESUMABLY USED C. 1960S- MID 1970S.

Canada

USED BY DR. ROGER GHYS IN REGULATING RADIATION DOSES TO BE GIVEN TO HIS PATIENTS AND FOR MEASURING RADIOACTIVITY IN NUCLEAR MEDICINE PROCEDURES. THIS WAS FOR LIQUID SCINTILLATION COUNTING OR IN CONJUNCTION WITH SODIUM IODIDE CRYSTALS. (REF. 1)

Function

TO DETECT LOW LIGHT LEVEL EMISSIONS.

Technical

EXAMPLE OF TYPICAL PHOTOMULTIPLIER TUBE, ONCE COMMON IN LOW LIGHT LEVEL APPLICATIONS IN ASTRONOMY, MEDICINE & PHYSICS. DEVELOPED IN THE 1920-30S TO REPLACE SELENIUM DETECTORS, THEIR USE PEAKED DURING THE 1960S-1970S. PHOTOMULTIPLIER TUBES WERE REPLACED BY MORE EFFICIENT COMPUTER CONTROLLED CCD DETECTORS IN THE 1980S.(REF.1

Area Notes

Unknown

Details

Markings

" DUMONT/ 6292/ MADE IN U.S.A. " printed in green on tube base; " 8125 EX " crudely incised on opposite side of base. "8125/ DUM/ EY", " LICENSED ONLY TO EXTENT/ INDICATED ON CARTON" and nos. 1 through 14 appear in raised print on base. "3" and "8125 EX" written in pencil on inside of tube.

Missing

NONE.

Finish

CLEAR GLASS TUBE HAS BROWN SYNTHETIC BASE, AND SILVER METAL COATING AROUND SIDES OF TUBE TOP. TOP OF GLASS TUBE APPEARS TO HAVE SMOKED FINISH.SIVER METAL AND WHITE SYNTHETIC (OR POSSIBLY PORCELAIN?) COMPONENTS ARE VISIBLE WITHIN.

Decoration

N/A