Gamma Radiation Damage Studies of Organic Protective Coatings and Gaskets

Bresee, J.C.; Watson, C.D.; Watson, Jonathon

doi:10.2172/4355362

Cited by 4 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The low yields of any volatile products in vacuum irradiation contrast with the very high and equal yields of Cl − and F − for irradiations in the presence of water and oxygen [ 5 ]. A smaller discrepancy also exists between F − yields from PTFE in aqueous and evacuated systems [ 4 , 41 , 42 ] (see table 12 ).…”

Section: Products Of Irradiationmentioning

confidence: 99%

“…In PTFE irradiated in air the reported development of appreciable water absorption [ 4 ] may be due likewise to the formation of carboxylic acid groups. The curious insensitivity of the PCTFE molecular weight to the presence of oxygen during irradiation may be due to the relative stability of peroxide radicals of this form, at least in the absence of water and alkali, or to the fact that the molecular weight drop is already occurring so rapidly in the absence of air.…”

Section: Products Of Irradiationmentioning

confidence: 99%

“…Volatile and ionic products sometimes show a dependence upon thickness [ 4 , 18 ] or upon storage after irradiation [ 4 ], which is attributed to slow diffusion. In the present study these effects were small because of the powdered form of the sample and the long storage before analysis.…”

Section: Products Of Irradiationmentioning

confidence: 99%

See 2 more Smart Citations

Gamma irradiation of fluorocarbon polymers

Florin¹,

Wall²

1961

J. RES. NATL. BUR. STAN. SECT. A.

View full text Add to dashboard Cite

Several ~uorocarbon polym~rs ~ere irradiated with Co60 gamma radiation at doses up to 10 22 ev/g. ~he polymers studIed Included polytetrafiuoroethylene, polytrifiuoroethylene, polychlorotrIfiuoroethy.len~, a copoly.mer of tetrafiuoroethylene with hexafiuoropropylene, and several rubbery vInylIdene fiuorIde copolymers. G-values were measured for volatile p~oducts, for free radica.ls ~etected by electron spin reso~ance, and, in the case of polychlorotrIfiuoroethylene, for SClSSIOns. The course of degradatIOn or crosslinking was followed by zero-strength-time .and tensile-strength measurements. It was found that for poly tetrafiuoroethylene and Its hexafiuoropropylene copolymer the presence of air-accelerated scission drastically. The mechanism of the radiation-induced changes is discussed in terms of freeradical intermediates.

show abstract

Section: Products Of Irradiationmentioning

confidence: 99%

Section: Products Of Irradiationmentioning

confidence: 99%

See 1 more Smart Citation

Gamma irradiation of fluorocarbon polymers

Florin¹,

Wall²

1961

J. RES. NATL. BUR. STAN. SECT. A.

View full text Add to dashboard Cite

show abstract

“…, nitric acidpl utoni urn sOl uti on providing 3.2 X 10 5 dpm was used to contaminate the 1.0-in. 2 coupons.The contaminant was pipetted to the center of the coupons and was allowed to air dry for 24 hr~…”

Section: Plutonium Decontamination Testsmentioning

confidence: 99%

“…Other researchers obtai ned simfl ar decontamination factors (OF = 93) for the vinyl-base paint on aluminum substrates. 2 The contaminant solution for those studies consisted of mixed fission products in 6N nitric acid with a gamma radiation dose rate of 10 6 rads.…”

mentioning

confidence: 99%

Materials selection of surface coatings in an advanced size reduction facility. [For decommissioned stainless steel equipment]

Briggs¹,

Younger²

1980

View full text Add to dashboard Cite

Monolayer 2D quantum materials subjected to gamma irradiation in high-vacuum for nuclear and space applications

Elafandi

Christiansen

Azam

et al. 2020

Applied Physics Letters

View full text Add to dashboard Cite

The stability and reliability of emerging two-dimensional (2D) quantum materials subjected to harsh environments, such as high-energy radiation, are of high importance, particularly in the fields of space, defense, and energy applications. In this work, we explored the effects of gamma radiation on the structural and optical properties of monolayer WSe2 and WS2 crystals. Raman and photoluminescence spectroscopies were employed to study and probe radiation-induced changes to the samples after exposure to intense gamma radiation (from a 60Co source) in a high-vacuum environment (∼1 × 10−6 Torr) and with various exposure times to vary the total accumulated dosage (up to ∼56 Mrad). In general, very small changes in optical or vibrational properties were observed compared to pristine samples, suggesting noteworthy stability even for high dosages of gamma radiation. Moreover, we found that WSe2 monolayer samples exhibited higher tolerance to gamma radiation compared to WS2 samples. These findings highlight the inherent stability of these 2D quantum materials in harsh radioactive environments, which motivates further investigation of their optical, electrical, and structural properties and exploration for use in future space, energy, and defense applications.

show abstract

Gamma Radiation Damage Studies of Organic Protective Coatings and Gaskets

Cited by 4 publications

References 0 publications

Gamma irradiation of fluorocarbon polymers

Gamma irradiation of fluorocarbon polymers

Materials selection of surface coatings in an advanced size reduction facility. [For decommissioned stainless steel equipment]

Monolayer 2D quantum materials subjected to gamma irradiation in high-vacuum for nuclear and space applications

Contact Info

Product

Resources

About