Repair of Sublethal Damage and Oxygen Enhancement Ratio for Low-Voltage Electron Beam Irradiation

1974 ◽  
Vol 60 (2) ◽  
pp. 355 ◽  
Author(s):  
William T. Tobleman ◽  
Arthur Cole
1974 ◽  
Vol 60 (1) ◽  
pp. 1 ◽  
Author(s):  
Arthur Cole ◽  
W. Grant Cooper ◽  
Francis Shonka ◽  
Peter M. Corry ◽  
R. M. Humphrey ◽  
...  

2016 ◽  
Vol 57 (10) ◽  
pp. 1759-1765 ◽  
Author(s):  
Masataka Tomizawa ◽  
Chisato Kubo ◽  
Masae Kanda ◽  
Michael C. Faudree ◽  
Itaru Jimbo ◽  
...  

2014 ◽  
Vol 55 (11) ◽  
pp. 1742-1749 ◽  
Author(s):  
Chisato Kubo ◽  
Takumi Okada ◽  
Masato Uyama ◽  
Masae Kanda ◽  
Yoshitake Nishi

Author(s):  
B. L. Armbruster ◽  
B. Kraus ◽  
M. Pan

One goal in electron microscopy of biological specimens is to improve the quality of data to equal the resolution capabilities of modem transmission electron microscopes. Radiation damage and beam- induced movement caused by charging of the sample, low image contrast at high resolution, and sensitivity to external vibration and drift in side entry specimen holders limit the effective resolution one can achieve. Several methods have been developed to address these limitations: cryomethods are widely employed to preserve and stabilize specimens against some of the adverse effects of the vacuum and electron beam irradiation, spot-scan imaging reduces charging and associated beam-induced movement, and energy-filtered imaging removes the “fog” caused by inelastic scattering of electrons which is particularly pronounced in thick specimens.Although most cryoholders can easily achieve a 3.4Å resolution specification, information perpendicular to the goniometer axis may be degraded due to vibration. Absolute drift after mechanical and thermal equilibration as well as drift after movement of a holder may cause loss of resolution in any direction.


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