Effect of γ-ray irradiation on performance of LiNbO(3)-based piezoelectric vibration sensors

Abstract LiNbO3 (LN)-based micro-electro-mechanical systems (MEMS) vibration sensors exhibit giant prospection in extreme environments, where exist a great amount of irradiation. However, to the best of our knowledge, it is still unknown whether the irradiation affects the performance of LN-based piezoelectric MEMS sensors. Based on this consideration, it is necessary to model the irradiation environment to investigate the effect of high dosage irradiation on LN-based vibration sensors. Firstly, the theoretical work is done to study the Compton Effect on the Gamma-ray irradiation with Co-60 source. After irradiation, X-ray diffraction (XRD) characterization was performed to verify the effect of irradiation on the crystalline of LN thin film. Meanwhile, the performances of output voltages on the five MEMS devices under various dosage of irradiation are compared. As a result, a neglected shift of 0.02 degrees was observed from the XRD image only under maximum irradiation dosage of 100 Mrad(Si). Moreover, the output voltages of cantilever-beam vibration sensors decrease by 3.1%. Therefore, it is verified that the γ-ray irradiation has very little influence on the LN-based MEMS vibration sensors, which have great attraction on the materials and sensors under high-dose irradiation.

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Gamma-ray irradiation and post-irradiation responses of high dose range RADFETs

RADECS 2001. 2001 6th European Conference on Radiation and Its Effects on Components and Systems (Cat. No.01TH8605) ◽

10.1109/radecs.2001.1159259 ◽

2005 ◽

Author(s):

A. Jaksic ◽

G. Ristic ◽

M. Pejovic ◽

A. Mohammadzadeh ◽

C. Sudre ◽

...

Keyword(s):

Gamma Ray ◽

Dose Range ◽

High Dose ◽

Post Irradiation ◽

Gamma Ray Irradiation

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Effects of Irradiation on Chitosan-Coated Nanoparticles for Hyperthermia

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.311-313.419 ◽

2011 ◽

Vol 311-313 ◽

pp. 419-431

Author(s):

Kwo Ping Chang ◽

Zhi Yuan Lin ◽

Mao Chin Hung ◽

Bor Tsung Hsieh

Keyword(s):

Specific Absorption Rate ◽

Gamma Ray ◽

Quality Characteristic ◽

Molar Ratio ◽

High Dose ◽

Optimal Parameters ◽

Control Factors ◽

Coated Nanoparticles ◽

Gamma Ray Irradiation ◽

Positive Effect

The optimal parameters of the chitosan-coated ferrofluid under two patterns of irradiation were investigated in this study. The quality characteristics were set both to the SAR (specific absorption rate, W/g) and the particle size (nm). The control factors were chosen as the gamma irradiation dose (Gy), the quantities of chitosan (g), and the molar ratio of Fe3+to Fe2+. It shows that SAR is a better choice for determining the quality characteristic. The quantities of chitosan have a less significant impact on SAR. The optimal condition for the Fe3+/Fe2+ratio was found to be between 2.0 to 2.5 when synthesizing the magnetite Fe3O4cores. High dose (100 k Gy in this study) of gamma ray irradiation given only to the solid chitosan will have a significantly positive effect on SAR of the chitosan-coated ferrofluid for hyperthermia. However, high dose irradiation of the chitosan-coated ferrofluid tends to destroy the chitosan-magnetite cores bonds.

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Second Harmonic Generation under High Dose-Rate Gamma Ray Irradiation

Laser Congress 2019 (ASSL, LAC, LS&C) ◽

10.1364/assl.2019.jw2a.22 ◽

2019 ◽

Author(s):

Hwan Hong Lim ◽

Takunori Taira ◽

Hironori Ohba ◽

Koji Tamura

Keyword(s):

Second Harmonic Generation ◽

Dose Rate ◽

Harmonic Generation ◽

Gamma Ray ◽

Second Harmonic ◽

High Dose Rate ◽

High Dose ◽

Gamma Ray Irradiation

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Gamma-ray irradiation and post-irradiation responses of high dose range RADFETs

IEEE Transactions on Nuclear Science ◽

10.1109/tns.2002.1039667 ◽

2002 ◽

Vol 49 (3) ◽

pp. 1356-1363 ◽

Cited By ~ 46

Author(s):

A. Jaksic ◽

G. Ristic ◽

M. Pejovic ◽

A. Mohammadzadeh ◽

C. Sudre ◽

...

Keyword(s):

Gamma Ray ◽

Dose Range ◽

High Dose ◽

Post Irradiation ◽

Gamma Ray Irradiation

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Grafting of polymers from clay nanoparticles via high-dose gamma-ray irradiation

Materials Letters ◽

10.1016/j.matlet.2006.12.023 ◽

2007 ◽

Vol 61 (17) ◽

pp. 3723-3727 ◽

Cited By ~ 13

Author(s):

Tao Wang ◽

Mozhen Wang ◽

Zhicheng Zhang ◽

Xuewu Ge ◽

Yue'e Fang

Keyword(s):

Gamma Ray ◽

High Dose ◽

Clay Nanoparticles ◽

Gamma Ray Irradiation

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A Performance Evaluation of a Notebook PC under a High Dose-Rate Gamma Ray Irradiation Test

Science and Technology of Nuclear Installations ◽

10.1155/2014/362354 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 2

Author(s):

Jai Wan Cho ◽

Kyung Min Jeong

Keyword(s):

Performance Evaluation ◽

Dose Rate ◽

Nuclear Power ◽

Gamma Ray ◽

Control Unit ◽

High Dose Rate ◽

High Dose ◽

Robot System ◽

Irradiation Test ◽

Gamma Ray Irradiation

We describe the performance of a notebook PC under a high dose-rate gamma ray irradiation test. A notebook PC, which is small and light weight, is generally used as the control unit of a robot system and loaded onto the robot body. Using TEPCO’s CAMS (containment atmospheric monitoring system) data, the gamma ray dose rate before and after a hydrogen explosion in reactor units 1–3 of the Fukushima nuclear power plant was more than 150 Gy/h. To use a notebook PC as the control unit of a robot system entering a reactor building to mitigate the severe accident situation of a nuclear power plant, the performance of the notebook PC under such intense gamma-irradiation fields should be evaluated. Under a similar dose-rate (150 Gy/h) gamma ray environment, the performances of different notebook PCs were evaluated. In addition, a simple method for a performance evaluation of a notebook PC under a high dose-rate gamma ray irradiation test is proposed. Three notebook PCs were tested to verify the method proposed in this paper.

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Hydrazine Radiolysis by Gamma-Ray in the N2H4–Cu+–HNO3 System

International Journal of Molecular Sciences ◽

10.3390/ijms22147376 ◽

2021 ◽

Vol 22 (14) ◽

pp. 7376

Author(s):

Naon Chang ◽

Huijun Won ◽

Sangyoon Park ◽

Heechul Eun ◽

Seonbyeong Kim ◽

...

Keyword(s):

Nuclear Power ◽

Power Plants ◽

Gamma Ray ◽

Uv Spectroscopy ◽

Radiolysis Product ◽

Decomposition Mechanism ◽

Irradiation Condition ◽

High Dose ◽

Hno3 Solution ◽

Γ Ray

Radiolysis of chemical agents occurs during the decontamination of nuclear power plants. The γ-ray irradiation tests of the N2H4–Cu+–HNO3 solution, a decontamination agent, were performed to investigate the effect of Cu+ ion and HNO3 on N2H4 decomposition using a Co-60 high-dose irradiator. After the irradiation, the residues of N2H4 decomposition were analyzed by Ultraviolet-visible (UV) spectroscopy. NH4+ ions generated from N2H4 radiolysis were analyzed by ion chromatography. Based on the results, the decomposition mechanism of N2H4 in the N2H4–Cu+–HNO3 solution under γ-ray irradiation condition was derived. Cu+ ions form Cu+N2H4 complexes with N2H4, and then N2H4 is decomposed into intermediates. H+ ions and H● radicals generated from the reaction between H+ ion and eaq− increased the N2H4 decomposition reaction. NO3− ions promoted the N2H4 decomposition by providing additional reaction paths: (1) the reaction between NO3− ions and N2H4●+, and (2) the reaction between NO● radical, which is the radiolysis product of NO3− ion, and N2H5+. Finally, the radiolytic decomposition mechanism of N2H4 obtained in the N2H4–Cu+–HNO3 was schematically suggested.

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