Polarization of Optical Radiation Induced by Electron Impact on Helium

1963 ◽  
Vol 129 (4) ◽  
pp. 1630-1637 ◽  
Author(s):  
R. H. Hughes ◽  
R. B. Kay ◽  
L. D. Weaver
Keyword(s):  
Electron Impact ◽  
Optical Radiation ◽  
Radiation Induced

E. Radiation Chemistry of Diphenylpicrylhydrazyl (DPPH), IV. The Mass Spectra of Some Aromatic Hydrazines. Comparison of Radiolytic and Photolytic Fragmentations

1976 ◽  
Vol 31 (10) ◽  
pp. 1372-1375
Author(s):  
W. G. Filby ◽  
W. H. Kalus
Keyword(s):  
Electron Impact ◽  
Mass Spectra ◽  
Radiation Chemistry ◽  
Hydrogen Migration ◽  
Radiation Induced

The mass spectra of some aryl hydrazines under electron impact are reported. In every case studied fragmentation occurs via fission of the weak hydrazyl N—N bond and hydrogen migration. Metastable ion data is presented in support of a proposed mechanism and some comparisons made between electron and radiation induced processes.

Polarization of the radiation induced by electron impact on He and Hg

Physica ◽  
1969 ◽  
Vol 45 (2) ◽  
pp. 305-320 ◽  
Author(s):  
H.G.M. Heideman ◽  
C. Smit ◽  
J.A. Smit
Keyword(s):  
Electron Impact ◽  
Radiation Induced

Radiation-Induced Precipitation at Thin Foil Surfaces in Ni-Be Alloys

1982 ◽  
Vol 40 ◽  
pp. 598-599
Author(s):  
T. Mukai ◽  
T. E. Mitchell
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Electron Irradiation ◽  
High Vacuum ◽  
Thin Foil ◽  
Homogeneous Precipitation ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron ◽  
Radiation Induced

Radiation-induced homogeneous precipitation in Ni-Be alloys was recently observed by high voltage electron microscopy. A coupling of interstitial flux with solute Be atoms is responsible for the precipitation. The present investigation further shows that precipitation is also induced at thin foil surfaces by electron irradiation under a high vacuum.

Annealing Of Radiation Damage in Tungsten

1970 ◽  
Vol 28 ◽  
pp. 412-413
Author(s):  
Robert C. Rau ◽  
John Moteff
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Radiation Damage ◽  
Thermal Annealing ◽  
Neutron Fluence ◽  
Dislocation Loops ◽  
Defect Clusters ◽  
Polycrystalline Tungsten ◽  
Transmission Electron ◽  
Radiation Induced

Transmission electron microscopy has been used to study the thermal annealing of radiation induced defect clusters in polycrystalline tungsten. Specimens were taken from cylindrical tensile bars which had been irradiated to a fast (E > 1 MeV) neutron fluence of 4.2 × 1019 n/cm2 at 70°C, annealed for one hour at various temperatures in argon, and tensile tested at 240°C in helium. Foils from both the unstressed button heads and the reduced areas near the fracture were examined.Figure 1 shows typical microstructures in button head foils. In the unannealed condition, Fig. 1(a), a dispersion of fine dot clusters was present. Annealing at 435°C, Fig. 1(b), produced an apparent slight decrease in cluster concentration, but annealing at 740°C, Fig. 1(C), resulted in a noticeable densification of the clusters. Finally, annealing at 900°C and 1040°C, Figs. 1(d) and (e), caused a definite decrease in cluster concentration and led to the formation of resolvable dislocation loops.

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