Explanipedia

Very-high-dose-rate Radiolysis of n-Butane in the Gas Phase. The Effect of the Addition of Electron Scavengers Open

Yoshihiko Hatano, Satoshi Takao, Hideki Namba, Takumi Ueno, Shōji Shida · 1974

The dose rate and its pulse-to-pulse reproducibility of very-high-intensity electron pulses have been measured. The effect of the addition of electron scavengers on the neutralization processes in the gas-phase radiolysis of n-butane has b…

The Radiophoto-luminescence of γ-Irradiated Hydrocarbon Glasses at 77 K Open

Hideo Yamazaki, Koichi Oka, Masabumi Sato, Shōji Shida · 1974

The radiophoto-luminescence (RPL) from γ-irradiated hydrocarbon glasses, i.e., 3-methylhexane, methylcyclohexane, and ethylcyclohexane, containing small amounts of various aromatics (1,3,5-trimethylbenzene, biphenyl, naphthalene, and 1,4-d…

The Electron-scavenging Process in 3-Methylhexane Glass at 77 K Studied by ESR Open

Koichi Oka, Hideo Yamazaki, Shōji Shida · 1973

The effect of various additives, i.e., nitrous oxide, sulfur hexafluoride, methyl chloride, and sulfur dioxide, on the yield of the trapped electrons produced in the γ-irradiated 3-methylhexane (3MHX) glass at 77 K have been investigated b…

The Gas-Phase Radiolysis of Cyclopropane Open

Jun-ichi Tanaka, Yoshihiko Hatano, Shōji Shida · 1971

The Measurement of Water and Other Oxygen-containing Products in the Radiolysis of Cyclohexane Solutions of Nitrous Oxide Open

Ken’ichi Takeuchi, Kyoji Shinsaka, Satoshi Takao, Yoshihiko Hatano, Shōji Shida · 1971

Water Formation in the Gas Phase Radiolysis of Nitrous Oxide-Hydrocarbon Mixtures Open

Satoshi Takao, Yoshihiko Hatano, Shōji Shida · 1971

The γ-Radiolysis of Liquid n-Hexane. The Effects of Radical, Electron, and Positive-ion Scavengers Open

Kyoji Shinsaka, Shōji Shida · 1970

The effects of various additives, SF6, NH3, C2H5OH, N2O, NO, SO2, and C2H4, on the product yields in the γ-radiolysis of liquid n-hexane at room temperature have been investigated. The following conclusions have been drawn: (i) The added S…

Photolysis of Acetylene at 1849 Å Open

Masao Tsukada, Shōji Shida · 1970

Mechanism of Benzene Formation in the Radiation-Induced and Photochemical Reactions of Acetylene Open

Shōji Shida, Masao Tsukada, Noboru Fujisaki, T. Oka · 1970

Mercury-Photosensitized Reaction of Acetylene Open

Shōji Shida, Masao Tsukada · 1970

The mercury-photosensitized reaction of acetylene has been studied with equimolar mixtures of C2H2 and C2D2 under various conditions of pressure, temperature, and additives. It is shown that the distribution of isotopically substituted ben…

Ionic Processes in the Radiolysis of Nitrous Oxide. The Effect of Electron Scavenger and Rare Gas Setisitization Open

Satoshi Takao, Shōji Shida · 1970

The effect of electron scavenger (SF6) on the radiolysis products of N2O was examined. The sensitization of N2O by various rare gases was also measured. In the presence of an electron scavenger we got 3.0 for the value of −ΔG(−N2O) in good…

Ionic Processes in the Radiolysis of Nitrous Oxide Open

Satoshi Takao, Shōji Shida, Yoshihiko Hatano, Hideo Yamazaki · 1968

Hydrogen Cyanide Formation in the Gas-phase Radiolysis of Mixtures of Nitrogen and Ethylene Open

T. Oka, Ryo Kato, Shin Sato, Shōji Shida · 1968

The C-C Bond Rupture in the Radiolysis of Liquid n-Hexane Open

Kyoji Shinsaka, Shōji Shida · 1967

The effects of added N2O, NO, N2O-NO mixture and NH3 on the yields of fragment products of n-hexane in the γ-radiolysis of liquid n-hexane at 40°C have been investigated. All of these additives decrease to a certain extent the G-values of …

Reply to D. J. Le Roy: Mechanism of the Benzene Formation in Mercury-Photosensitized Reaction of Acetylene Open

Shōji Shida, Masao Tsukada, T. Oka · 1966

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The Reactions of t-C4H9+ in the Radiolysis of Neopentane in the Gas Phase Open

Tetsuo Miyazaki, Shōji Shida · 1966

The yields and reactions of t-C4H9+ produced in the radiolysis of neopentane in the gas phase have been studied by the use of ammonia. The yields of iso-C4H8 increase sharply upon the addition of a small amount of ammonia in the radiolysis…

The Photolysis of Propylene at 1849Å Open

Shigeyoshi Arai, Shōji Shida, Takeo Nishikawa · 1966

The Photolysis of cis-2-Butene and Its Implications for Radiation Chemistry Open

Yoshihiko Hatano, Shōji Shida · 1966

The direct photolysis at 1849 Å and the mercury-photosensitized reaction at 2537 Å of cis-2-butene have been studied in the gas phase at room temperature. It may be considered that the excited singlet state of cis-2-butene is formed in the…

Reactivities of the Free Radicals Formed in High Polymers A Classification of High Polymers Open

Hisashi Ueda, Shōji Shida · 1966

有機高分子化合物に固相で放射線を照射すると,多くの場合,20℃ 近辺で安定な遊離基を生ずる。高分子化合物は低分子結晶とちがって,気体と分子的に混合しあうことができるため,気体状化合物と混合して照射すると,生成した遊離基とその気体状化合物の反応が起こる。真空中照射しあとから気体と混合しても反応が起こるが,その反応生成物は一般には照射前に混合を行なった場合と異なる。この相違を遊離基の変換過程として説明し,その変換過程の特徴に着目して有機高分子化合物の分類を試みた。遊離基の観測に…

A Practical Comparison between Nitrous Oxide Dosimetry and Fricke Dosimetry for the Estimation ofγ-RayEnergy absorbed in Gaseous Media Open

Kiyoshi Furukawa, Shōji Shida · 1966

The Reaction of Ions in the Radiolysis of n-Butane in the Gas Phase Open

Tetsuo Miyazaki, Shōji Shida · 1965

The effect of ammonia in the radiolysis of n-butane has been investigated. In low pressure radiolysis, C3H8 and C2-products decrease upon the addition of ammonia while C3H6 increases. C4H8 increases sharply upon the addition of a small amo…

Photolysis of Butene-1 at 1849Å Open

Noriho Harumiya, Shōji Shida, Shigeyoshi Arai · 1965

The Radiolysis of Liquid cis-2-Butene Open

Yoshihiko Hatano, Shōji Shida, Shin Sato · 1964

The radiolysis of cis-2-butene has been studied in the liquid phase at room temperature. (1) The major products (and their G-values) were hydrogen (1.02), n-butane (0.83), 1-butene (0.40), trans-2-butene (2.29), C8 hydrocarbons (2.30), and…

The Radiolysis of Squalane (C30H62) from −196°C to 350°C Open

Kiyoshi Furukawa, Shigeyoshi Arai, Hideo Yamazaki, Shōji Shida · 1964

The Radiolysis of Cyclohexane. IV. The Effect of Solutes on the Radiolysis of Liquid Cyclohexane Open

Kiyoaki Kikuchi, Shin Sato, Shōji Shida · 1963

シクロヘキサンのγ線分解によって生ずる水素を定量し,ヨウ素,オレフィンおよび芳香族化合物の少数添加の影響を検べた。その結果,水素の生成を抑制する効果はつぎの順であることを見いだした。ヨウ素>アントラセン>ナフタレン～ビフェニル>シクロヘキセン>ベンゼン,また低級不飽和炭化水素については,イソブテン>アセチレン>プロピレン>エチレンである。これらの順位は遊離基捕捉効果の順位と一致する。また低級不飽和炭化水素では,添加化合物の水素化物が予想される量だけ生成していることを見いだし…

Electron Spin Resonance Absorption of Organic Compounds Open

Shōji Shida · 1962

The Radiolysis of Cyclohexane III. The Radiolysis of Cyclohexane-Cyclooctatetraene Mixtures Open

Shōji Shida, Shin Sato, Hideo Yamazaki, Rei Yugeta · 1962

シクロヘキサンーシクロオクタテトラエン混合系のγ線分解を行ない,水素および低級炭化水素(C1～C4)ののG値を求め,シク覆ヘキサンの放射線分解に対するシクロオクタテトラエンのエネルギー移動効果を動力学的に検討した。その結果,シクロヘキサンから生ずるエチレンとプロピレンは分子過程によって生成し,その前駆体は,分子過程によって生ずる水素の前駆体とは異なることを明らかにした

Mercury-Photosensitized Decomposition of Cyclohexane and Cyclopentane at High Temperatures. Open

Shigeyoshi Arai, Shōji Shida · 1961

350℃,400℃の高温でシクロヘキサンおよびシクロペンタンの水銀光増感反応を行なったところ,室温付近では認められなかった種々の開環分解生成物を見出した。すなわちシクロヘキサンについて室温付近での場合,生成物は水素,シクロヘキセンおよびジシクロヘキシルのみであるが,高温ではメタン,エタン,エチレン,プロパン,プロピレン,ブテンならびにブタジエン等が認められた。またシクロペンタンについても同様で,室温付近では水素,シクロペンテンおよびシクロペンチルシクロペンタンのみが生成する…

Electron Spin Resonanceo f the Radicals Produced in Saccharides by Gamma-Irradiation. Open

Hisashi Ueda, Zentitiro Kuri, Shōji Shida · 1961

放射線で単糖類,少糖類およびセルロース類似高分子化合物中に生じたラジカルの常温の電子スピン共鳴吸収(ESR)を測定し,それらの熱処理による変化をしらべた。またショ糖の弾結晶に放射線を照射し,生ずるESRの磁気異方性を測定した。照射した砂糖によりアクリルアミド水溶液が重合することから・これら物質中に生じたラジカルの反応牲を確認し,これら物質中に生じたラジカルの固体状態での気体に対する非反応性は水素結合によるものと結論した。

Behavior of the Free Radicals Trapped in Gamma-Irradiated Compounds Which Contain Hydrogen Bonds Open

Zen-ichiro Kuri, Yuzuru Fujiwara, Hisashi Ueda, Shōji Shida · 1960

A series of experiments was performed which suggest that the nonreactivity of gaseous scavengers with free radicals in certain irradiated compounds is not due to inherent free radical stability but to a network of intermolecular hydrogen b…

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