Die Abtrennung des Bariums vom Radium durch radiometrische Adsorptionsanalyse. (Das Verhalten der Radium-Emanation.)

1946 ◽  
Vol 33 (4) ◽  
pp. 119-120 ◽  
Author(s):  
R. Lindner
Keyword(s):  
Radium Emanation

scholarly journals THE ACTION OF RADIUM EMANATION ON LIPASE

1913 ◽  
Vol 16 (3) ◽  
pp. 379-384
Author(s):  
E.K. Marshall ◽  
L.G. Rowntree
Keyword(s):  
Radium Emanation

scholarly journals XLIX.The amount of radium emanation in the atmosphere

1908 ◽  
Vol 16 (94) ◽  
pp. 584-615 ◽  
Author(s):  
John Satterly
Keyword(s):  
Radium Emanation

scholarly journals On the effect of high temperature on radium emanation

1906 ◽  
Vol 77 (516) ◽  
pp. 241-247 ◽  
Keyword(s):  
High Temperature ◽  
Radium Emanation ◽  
Rate Of Decay

It has been shown by Curie and Danne that the rate of decay of radium C can be altered by subjecting it to temperatures above 630°C. The rate of decay increases with rise of temperature, reaching a maximum at about 1100°C., after which it again decreases up to 1300°C. The following are some of the values taken from their paper:— Temperature centigrade. c' . θ . 630° 3∙94 x 10 -4 29∙3 830 4∙70 x 10 -4 24∙6 1000 5∙50 x 10 -4 21∙0 1100 5∙70 x 10 -4 20∙3 1250 4∙80 x 10 -4 24∙1 1300 4∙50 x 10 -4 25∙4 Here c' is the radio-active constant, and θ is the time in minutes taken by the activity of radium C to fall to half its value.

scholarly journals RELEASE OF RADIUM EMANATION FROM WATER AT DIFFERENT TEMPERATURES.7

1917 ◽  
Vol 45 (9) ◽  
pp. 443-443
Author(s):  
J. MORAN
Keyword(s):  
Radium Emanation ◽  
Different Temperatures

RADIUM EMANATION IN CARCINOMA OF THE LARYNX

1925 ◽  
Vol 1 (3) ◽  
pp. 286-295 ◽  
Author(s):  
S. SALINGER
Keyword(s):  
Radium Emanation ◽  
Carcinoma Of The Larynx

scholarly journals THE THEORY AND TECHNIQUE OF TREATMENT BY RADIUM EMANATION NEEDLES

BMJ ◽  
1915 ◽  
Vol 1 (2829) ◽  
pp. 498-500
Author(s):  
W. C. Stevenson
Keyword(s):  
Radium Emanation

RADIUM EMANATION IN MINERAL WATERS.

The Lancet ◽  
1912 ◽  
Vol 179 (4631) ◽  
pp. 1497
Author(s):  
FrederickC. Harrison
Keyword(s):  
Mineral Waters ◽  
Radium Emanation

scholarly journals XIII. The grating spectrum of radium emanation

1909 ◽  
Vol 17 (97) ◽  
pp. 202-204 ◽  
Author(s):  
T. Royds
Keyword(s):  
Radium Emanation

scholarly journals The effect of temperature upon radioactive disintegration

1912 ◽  
Vol 86 (586) ◽  
pp. 240-253 ◽  
Keyword(s):  
High Temperature ◽  
High Temperatures ◽  
Systematic Investigation ◽  
Effect Of Temperature ◽  
Active Matter ◽  
Radium Emanation ◽  
Γ Rays ◽  
Method Of Measurement ◽  
Positive Effect

Within the last few years the influence of high temperature on the activity of radium emanation, of the active deposit, and of radium C has been examined in detail by several authors. The conclusions arrived at have been conflicting, some workers affirming a positive effect of tem­perature, others denying it. This lack of agreement is due, however, to a difference in the method of measurement of the active matter under investigation. Those workers who measured the activity by γ-rays are all agreed that temperature has no effect whatever, while those who measured by β-rays found always an effect of some kind, in many cases of considerable magnitude, and often, indeed, of a very surprising nature. While, however, the fact that there is a β-ray effect is admitted by all, there is still a lack of agreement between the results of the experiments of different workers, and even of different experiments of the same worker, which is hardly to be expected if the effects were due to a definite change in the properties of the disintegrating atoms at high temperatures. In view, therefore, of the uncertainty which has arisen on a point of such great theoretical importance, a systematic investigation was necessary to obtain definite results, whether positive or negative. This the author, at the request of prof. Rutherford, has carried out.

scholarly journals The Atomic Weight of the Radium Emanation

Nature ◽  
1909 ◽  
Vol 82 (2094) ◽  
pp. 188-188
Author(s):  
FREDERICK SODDY
Keyword(s):  
Atomic Weight ◽  
Radium Emanation
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