Effects of high-temperature anneals and Co60 gamma-ray irradiation on strained silicon on insulator

2007 ◽  
Vol 102 (7) ◽  
pp. 074507 ◽  
Author(s):  
K. Park ◽  
M. Canonico ◽  
G. K. Celler ◽  
M. Seacrist ◽  
J. Chan ◽  
...  
Keyword(s):  
High Temperature ◽  
Gamma Ray ◽  
Silicon On Insulator ◽  
Strained Silicon ◽  
Gamma Ray Irradiation ◽  
Co60 Gamma

scholarly journals Surface Composition and Corrosion of SS 41 Carbon Steel in High Temperature Water under γ-ray Irradiation

1982 ◽  
Vol 31 (4) ◽  
pp. 254-260
Author(s):  
Akihisa Sakumoto ◽  
Masao Gotoda ◽  
Yuji Horii ◽  
Hidetaka Konno ◽  
Hiroki Tamura ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Steel ◽  
Gamma Ray ◽  
Surface Composition ◽  
High Temperature Water ◽  
Gamma Ray Irradiation ◽  
Temperature Water

scholarly journals Induksi Mutasi Kalus Embriogenik Gandum (Triticum aestivum L.) melalui Iradiasi Sinar Gamma untuk Toleransi Suhu Tinggi

2015 ◽  
Vol 43 (1) ◽  
pp. 36 ◽  
Author(s):  
Ryan Budi Setiawan ◽  
Nurul Khumaida ◽  
Diny Dinarti
Keyword(s):  
High Temperature ◽  
Embryogenic Callus ◽  
Genetic Improvement ◽  
In Vitro Selection ◽  
Gamma Ray ◽  
Triticum Aestivum L ◽  
Temperature Tolerance ◽  
Randomized Design ◽  
Gamma Ray Irradiation

Mutation techniques through gamma ray irradiation is useful to support breeding programs for genetic improvement of wheat. Genetic improvement on tolerance to high temperatures is necessary for development of wheat in Indonesia. The purpose of this study was to determine the level of radiosensitivity to be used as the basis for the induction of mutations by gamma ray irradiation on embryogenic callus to obtain putative mutants with high temperature tolerance. Explants used were embryogenic callus cultured on MS medium containing 30 g L-1 sukrosa, 2 g L-1 gelrite, 2 mg L-1 2.4D and 1 mg L-1 picloram. Culture incubated for 6 weeks with temperature 20±4 oC in the room culture. Five irradiation doses (10, 20, 30, 40 and 50 Gy) were used in radiosensitivity testing. A factorial, completely randomized design was applied to the experiment. The first factor was selection temperature with three levels (25, 30 and 35 oC), and the second factor was doses of gamma ray iradiation with three levels (10, 20, and 30 Gy). The result showed that radiosensitivity levels varied among varieties, LD20: 7.79 to 18.96 Gy and LD50: 24.29-33.63 Gy. Selayar variety which has highest sensitivity value compared with Dewata and Nias. Increasing doses of iradiation and temperature decrease survival of embryogenic callus, number of embryos, and percentage of germinated plantlets. Based on in vitro selection using high temperature (25, 30, and 35 oC), the obtained 19 putative mutants were derived from embryos that appear on the surface of embryogenic callus survival after irradiation and high temperature selection.<br />Keywords: in vitro selection, putative mutant, radiosensitivity, somatic embryo

Effects of Gamma Ray Irradiation on High Temperature Superconductors YBCO with Nanoparticles Fe3O4 Addition

2015 ◽  
Vol 1107 ◽  
pp. 595-600 ◽  
Author(s):  
Kong Wei ◽  
Siti Nurdalila Abd-Ghani ◽  
Hon Kah Wye ◽  
Kong Ing ◽  
Roslan Abd-Shukor
Keyword(s):  
High Temperature ◽  
Gamma Ray ◽  
High Temperature Superconductors ◽  
Solid State Reaction Method ◽  
Nano Particles ◽  
Transport Critical Current Density ◽  
Ybco Superconductor ◽  
Oxide Powders ◽  
Before And After ◽  
Gamma Ray Irradiation

<p>The effects of gamma ray irradiation on high temperature superconductors YBa2Cu3O7-δ with nano particles Fe3O4 (20-30 nm) addition were investigated. YBCO superconductor powders were prepared by using high purity oxide powders via solid state reaction method. 0.01 – 0.05 wt.% of nano particles were added into YBCO. Samples were irradiated with 100 kGy gamma ray. The critical temperature (Tc) and transport critical current density (Jc) were determined by using four point probe method. The lattice parameters and morphology of the samples were characterized by X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM), respectively. The results before and after gamma ray irradiation were compared. All of the samples showed increased Tc-zero after 100 kGy gamma ray irradiation. However, the Jcwas degraded after gamma ray irradiation. There is no significant variation found in the XRD patterns. The porosity of the samples was increased by the gamma ray irradiation. It can be concluded that gamma ray irradiation has enhanced the superconducting properties but degraded the transport properties.</p>

Induced lattice defects in InGaAsP laser diodes by high-temperature gamma ray irradiation

2001 ◽  
Vol 308-310 ◽  
pp. 1185-1188 ◽  
Author(s):  
H. Ohyama ◽  
T. Hirao ◽  
E. Simoen ◽  
C. Claeys ◽  
S. Onoda ◽  
...  
Keyword(s):  
High Temperature ◽  
Gamma Ray ◽  
Laser Diodes ◽  
Lattice Defects ◽  
Gamma Ray Irradiation
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