S U B S C R I B E TO T H E
Nuclear Instruments
NEW
DESIGNED, BUILT AND BACKED BY NMC INDIANAPOLIS, INDIANA
INDUSTRIAL and ENGINEERING
This Gamma Spectrometer Ends "Dark Current" Defect; Provides Direct Peak Comparison and Better Resolution from 1 kev to 6 mev.
CHEMISTRY new in concept, new in thought, new in de sign and containing new features, depart ments and professional services. N E W — l & E C "Trendslelter" with last minute news of scientific trends that affect chemists and chemical engineers in technical work or management. It also includes news of company expansions, production volumes, business trends and indicators, corporation news, personals, new ideas. N E W — a greatly expanded market report on key commer cially important industrial chemicals. Major consumer fields, producers, production, technology, sales, exports, imports, principal uses, references and market trends are given for one important industrial chemical each month. NEW—complete tables of contents of current issues of these eight ACS publications: Analytical Chemistry—Journal of the American Chemical Society—Journal of Organic Chem istry—Rubber Chemistry and Technology—Journal of Chem ical and Engineering Data—Journal of Agricultural and Food Chemistry—Journal of Physical Chemistry—Journal of Chem ical Education. N E W — a n expanded "Ideas Exchange" where experts will give you explicit answers to your questions. N E W — d e p t h interpretation of new and significant chemi cal developments most likely to exert great influence on re search, commercial development, process design, engineering, production or marketing. Informative comments on happen ings in business and professional affairs are included. N E W expanded contents pages to speed reference and the passing of ideas to colleagues. Regular features strengthened and directed to technical management. Here, experts report each month on the major CPI technical management problems of costs, equipment and design, instrumentation, corrosion, safety—and frequently on atmospheric pollution, industrial wastes, statistical design.
AMERICAN CHEMICAL SOCIETY 1155 Sixteenth Street, N. W. Washington E, D. C. Please enter my subscription to the new INDUSTRIAL AND
ENGINEERING CHEMISTRY
for the following
period. My payment is enclosed. • 1 year 15.00 • 2 years—$8.00 Π 3 years—$11.00 Name
Model GSS-I-$4,180*
The NMC Model GSS-1 gamma spectrom eter c o m b i n e s i n o n e c h a s s i s a regulated high voltage supply as a part of the count ing ratemeter autoscan system . . . all-tran sistorized probe amplifier and spectrometer circuits . . . a n d either solid or well-type crystals. It's the only system that eliminates the " d a r k current" defect, analyzes emitters f r o m 1 kev t o a r o u n d 6 m e v , a n d p e r m i t s direct peak c o m p a r i s o n of emitters using s e m i - a u t o m a t i c peak i n t e g r a t i o n . G r a p h paper supplied i s calibrated in mev.
A c t u a l S p e c t r o g r a m s Made with a GSS-1
NIGH RESOLUTION HERE
HIGH RESOLUTION HERE NO "DARK CURRENT" DEFECT HERE
NO "DARK CURRENT" DEFECT HERE
A c t u a l spectrogram of Cobalt-60 made with a GSS-1 g a m m a spectrometer system. W i n d o w No. 3. T i m e c o n s t a n t : 2 sec.
Radium, after four runs over 20 hour period w i t h o u t i n s t r u m e n t a d j u s t m e n t . Range 30,000 C / M . T i m e c o n s t a n t : 3 sec.
Detect and Measure α, β and J Four Ways with This 3-Unit All-Purpose Laboratory— 1 . . . o r 1 + 2 . . . o r 1 + 3 . . . o r 1 + 2 + 3 1 P R O P O R T I O N A L COUNTING SYSTEM PC-3A-$1395.00* T h e only i n s t r u m e n t that c o u n t s every alpha a n d beta emitted in a 2 pi angle f r o m pre pared samples. Precisely separates a b s o lute a m o u n t s of alpha a n d beta f r o m a n y d r y s a m p l e . I d e a l f o r C - 1 4 , C a - 4 5 , P-32 a n d H-3. D u e t o h i g h y i e l d , c o u n t i n g t i m e m a y be r e d u c e d 80% t o 95%. H i g h voltage a n d scaling systems operate with US-1 a n d WSC-1 shown below.
2 UNIVERSAL
3 WELL-TYPE
SHIELD
COUNTER
US-1A-$395.00»
WSC-1 -$995.00*
Detects g a m m a a n d beta-gamma activity in prepared fiat samples. A l s o accepts g a m m a scintillation detector, mylar w i n d o w G M f l o w detector, and strip c h r o m a t o g r a p h scanner. Operates with P C - 3 A .
Background less than 140 c p m . Detects low-level g a m m a activity in test t u b e and flat type samples. All-transistorized amplifier. W o r k s with any scaler. Operates with the PC-3A.
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Nuclear Measurements Corp. 2460 N. Arlington Avenue · Indianapolis 18, Indiana International Office: 13 E. 40th Street, New York 16, N.Y.
NMC INDIANAPOLIS
Circle No. 105 on Readers' Service Card VOL.
3 3 , N O . 1 , JANUARY 1961
•
137 A
