Characterisation of the structural heterogeneity of the soil tilled layer by using in situ 2D and 3D electrical resistivity measurements

2009 ◽  
Vol 103 (2) ◽  
pp. 387-398 ◽  
Author(s):  
M. Séger ◽  
I. Cousin ◽  
A. Frison ◽  
H. Boizard ◽  
G. Richard
Author(s):  
W. E. King

A side-entry type, helium-temperature specimen stage that has the capability of in-situ electrical-resistivity measurements has been designed and developed for use in the AEI-EM7 1200-kV electron microscope at Argonne National Laboratory. The electrical-resistivity measurements complement the high-voltage electron microscope (HVEM) to yield a unique opportunity to investigate defect production in metals by electron irradiation over a wide range of defect concentrations.A flow cryostat that uses helium gas as a coolant is employed to attain and maintain any specified temperature between 10 and 300 K. The helium gas coolant eliminates the vibrations that arise from boiling liquid helium and the temperature instabilities due to alternating heat-transfer mechanisms in the two-phase temperature regime (4.215 K). Figure 1 shows a schematic view of the liquid/gaseous helium transfer system. A liquid-gas mixture can be used for fast cooldown. The cold tip of the transfer tube is inserted coincident with the tilt axis of the specimen stage, and the end of the coolant flow tube is positioned without contact within the heat exchanger of the copper specimen block (Fig. 2).


2020 ◽  
Vol 825 ◽  
pp. 154108
Author(s):  
I.-E. Benrabah ◽  
G. Altinkurt ◽  
M. Fèvre ◽  
M. Dehmas ◽  
B. Denand ◽  
...  

1993 ◽  
Vol 34 (1) ◽  
pp. 7-12
Author(s):  
Jun’ichi Kozaki ◽  
Katsuki Hazama ◽  
Osamu Nittono ◽  
Kenji Hamamura

2016 ◽  
Vol 87 (2) ◽  
pp. 023902 ◽  
Author(s):  
J. J. Colin ◽  
Y. Diot ◽  
Ph. Guerin ◽  
B. Lamongie ◽  
F. Berneau ◽  
...  

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