scholarly journals RADIATION DAMAGE TO BSCCO-2223 FROM 50 MEV PROTONS

2008 ◽  
Author(s):  
A. F. Zeller ◽  
R. M. Ronningen ◽  
A. Godeke ◽  
L. H. Heilbronn ◽  
P. McMahan-Norris ◽  
...  
Keyword(s):  
Radiation Damage ◽  
Mev Protons

RADIATION DAMAGE OF PAPER SAMPLES IN IN-AIR PIXE ANALYSIS

1999 ◽  
Vol 09 (01n02) ◽  
pp. 47-50 ◽  
Author(s):  
S. Matsuyama ◽  
H. Endo ◽  
K. Ishii ◽  
H. Yamazaki ◽  
Y. Tokai ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Radiation Damage ◽  
Beam Irradiation ◽  
Pixe Analysis ◽  
Japanese Paper ◽  
Mev Protons

Degradation of paper caused by beam irradiation was investigated from a viewpoint of discoloration in PIXE analysis and its application to the paper samples of archaeology. Two types of paper (Japanese paper and fine quality paper) were tested in in-air PIXE analysis with 3 MeV protons. The degree of discoloration was quantitatively measured by the use of a calorimeter. The degree of discoloration was different for each tested paper and corresponded to the radiation dose of ions. It is resulted that even the in-air PIXE analysis should be carefully applied to archaeological treasures. Because discoloration of all tested paper decreased gradually at first but then increased after a few weeks. However, this phenomenon can be used to develop a technique of funny coloration.

Radiation damage and dose rate linearity response of a p-Si detector in 70 MeV protons

1983 ◽  
Vol 217 (3) ◽  
pp. 501-505 ◽  
Author(s):  
Göran Rikner ◽  
Erik Grusell ◽  
Valerij Kostjuchenko ◽  
Victor Lukjashin ◽  
Michail Lomanov
Keyword(s):  
Dose Rate ◽  
Radiation Damage ◽  
Mev Protons

Degradation and Recovery of Si Diodes by 20-Mev Protons And 220-Mev Carbon Particles

1997 ◽  
Vol 487 ◽  
Author(s):  
T. Hakata ◽  
H. Ohyama ◽  
E. Simoen ◽  
C. Claeys ◽  
H. Sunaga ◽  
...  
Keyword(s):  
Radiation Damage ◽  
Reverse Current ◽  
Nuclear Collision ◽  
Electrical Performance ◽  
Fast Neutrons ◽  
Si Substrate ◽  
Recombination Lifetime ◽  
Carbon Particles ◽  
The Difference ◽  
Mev Protons

AbstractResults are presented of a study on the degradation of the electrical performance of Fe contaminated n+p Si diodes, subjected to a 220-MeV carbon irradiation. The reverse current of the diodes increases after irradiation, while the capacitance and hence the doping concentration decreases. The areal and peripheral components of the leakage current are extracted from diodes with different area to perimeter ratios. Both the generation and the recombination lifetime calculated from I/V and C/V characteristics also decrease. The deep levels in the Si substrate induced by the irradiation are mainly responsible for the degradation of the diode performance. The radiation damage is also studied for 1 -MeV electrons and 1 -MeV fast neutrons. The performance degradation for carbon irradiation is three orders of magnitude larger than that for electron irradiation. The differences in the radiation damage are explained by the differences in the number of knock-on atoms and the nonionizing energy loss (NIEL), which is attributed to the difference of mass and the possibility of nuclear collision with target Si atoms

scholarly journals Calculation of radiation damage effects of 800 MeV protons in a “thin” copper target

1977 ◽  
Vol 67 (1-2) ◽  
pp. 140-154 ◽  
Author(s):  
C.Alton Coulter ◽  
Don M. Parkin ◽  
Walter V. Green
Keyword(s):  
Radiation Damage ◽  
Copper Target ◽  
Mev Protons

Simulation of Proton Irradiation Damage for Fe-Ni Magnetic Alloy

2012 ◽  
Vol 503-504 ◽  
pp. 338-341
Author(s):  
Bo Cao ◽  
Tong Rui Yang
Keyword(s):  
Energy Loss ◽  
Radiation Damage ◽  
Proton Irradiation ◽  
Irradiation Damage ◽  
Magnetic Alloy ◽  
Damage Dose ◽  
Damage Rate ◽  
Mev Protons

The Fe-Ni magnetic alloy irradiated by 10 MeV and 20 MeV protons were simulated by TRIM program. The energy loss and irradiation damage were calculated, and some important results were concluded. The average number of vacancies of the irradiation with 10 MeV and 20 MeV protons are 131.7 and 214.5. The damage rate of the Fe-Ni magnetic alloy irradiated with 10 MeV and 20 MeV protons are 2.278×10-6 dpa/s and 1.227×10-6 dpa/s. For the 1µA protons, in order to reach the radiation damage dose of 2 dpa, it will need 244 h and 453 h irradiated by 10 MeV and 20 MeV protons respectively.

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