For study of submicroscopic structure b y X - r a y Diffraction, K o d a k offers 6 films Choice of the best film for a specific problem
depends
upon
the
relative
importance of film speed, contrast, a n d g r a i n i n e s s — a s w e l l as the quality of the
radiation.
The
table
shows
the
characteristics of six Kodak Films suit a b l e for direct x - r a y exposure in dif fraction w o r k .
EASTMAN KODAK COMPANY X-RAY DIVISION Rochester 4, Ν. Υ.
Re ative speed
Kodak Films for X - r a y Diffraction
O r d e r of
Κ radiation
Contrast
increasing
Cr
Cu
Mo
Kodak Industrial X-ray Film, Type Κ
graininess
150
130
110
high
3
Kodak No-Screen X-ray Film
100
100
100
low
3
Kodak Industrial X - r a y Film, Type F
85
60
40
low
2
Kodak Single Coated X - r a y Film — Blue Sensitive
80
45
25
low
2
Kodak Photoflure Film—Blue Sensitive*
80
45
25
low
2
Kodak Industrial X-ray Film, Type A
22
17
14
high
1
"Kodak Photoflure Film—Β ue Sensitive i available on! y in 100-fo >t rolls of 70-rnm. width.
For each radiation quality, Kodak No-Screen X-ray Film has arbitrarily been as signed the speed value of 1 00 (at a density of 0.3 above base density plus fog}, it is not valid to compare film speeds for different radiation qualifies. Norma! de velopment is 5 minutes in Kodak Rapid X-ray Developer at 68° F. {20° C.) with 5 seconds of agitation each minute. For a notebook-size version of this chart and further information, write for the new free booklet, "Kodak Materials and Accessories for Industrial Radiography."
X-RAY DIFFRACTION . . . an important function of photography
Kodak TRADE
MARK
