巻号一覧
42 巻, 5 号
選択された号の論文の18件中1～18を表示しています
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渡辺 宏1973 年 42 巻 5 号 p. 447
発行日: 1973/05/10
公開日: 2009/02/09
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城阪 俊吉1973 年 42 巻 5 号 p. 448-465
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーThe term “ceramics” means not only traditional earthenware, stoneware and porcelain made of baked natural clay but also “electro-ceramics” formed by sintering fine particles chemically obtainable such as oxide and sulfide. The ceramics is the first tool treated chemi-cally by the human beings about 10, 000 years ago. The ceramics of today, while inheriting its original tradition as a tool or object of art, has been contributing to the human society by giving birth to a multitude of electro-ceramics in response to the requirement of electric and electronic industries. The long history of ceramics reveals various kinds of instructive things in view of both technical and aesthetic points. Referring to the long history of ceramics, the present paper is to describe how various ceramics were invented and improved, and how electro-ceramics came up and progressed in association with civilization and science. The ceramic history also figures one face of Japanese technology, that is, a modification of foreign technology which should be overcome for the further progress of Japanese industry.抄録全体を表示PDF形式でダウンロード (3834K) -
山岸 昭雄, 稲場 文男1973 年 42 巻 5 号 p. 466-473
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーAbsolute measurements of the mean lifetime of excited states in gaseous atoms have been reported by many authors using various experimental methods. The present paper deals with life time measurements using correlated photons in cascade. Two photons emitted spon-taneously in the cascade of a three level system are detected separately by two photomultipli-ers (PM) and from the time correlation between output photoelectron pulses of the two PM's, the direct measurement of the lifetime of the intermediate state in the cascade transition has been obtained.
The optimum operational condition of this method is discussed quantitatively by analyz-ing the signal-to-noise ratio and the contrast factor which is defined as a ratio of signal to back ground. Based on the analysis, measurements were made on 63P1 level in Hg I, and 2p8 and 2p9. (Paschen notation) levels in Ne I. The measured results on lifetimes and Ne-Ne collisional cross sections are presented in comparison with corresponding results of other wor-kers using different techniques.抄録全体を表示PDF形式でダウンロード (559K) -
足立 敏之, 中村 勝吾1973 年 42 巻 5 号 p. 474-484
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーThe tips of tungsten specimens in a field ion microscope were damaged by heavy imaging gases in the presence of an imaging field. These damages increased in proportion to the gas pressure, the exposure time, and the field strength. This result proved that the damages were due to expelled atoms and vacancies on the surface, which occured by the collisions of gas atoms. The damage caused by a mixture of gases (He+Ar or Kr) was larger than that by pure gas (Ar, Kr). When the field strength is above 90% of the field evaporation strength, the locahhigh field areas of tip surface were not damaged. When the field strength was appropriate to give the best image, the entire surface, in particular {111} and {112} planes, was damaged. When the field strength was below 75% of the field evaporation strength, {Ill} and {114} planes were severely damaged and many clusters were created. These dam-ages are estimated to be due to the penetration probability of imaging gas atoms through the ionization zone, and accounted for by a correction of the thermal accomodation coefficients between various gases and the tungsten surface by field adsorption.抄録全体を表示PDF形式でダウンロード (4921K) -
楢岡 清威, 関谷 三千夫, 野村 貞夫1973 年 42 巻 5 号 p. 485-490
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーEtch pits in the shape of a rhombus or hexagon-like appear on the (001) surface of a gado-linium molybdate crystal when etched with sulfuric acid diluted by 25-100 fold of water at 50°C whilst spindle-shaped etch pits appear on the (100) suface. Pairs of etch pit lines run nearly parallel to each other along <110> directions on both surfaces. It is supposed that the pit lines correspond to a section of dislocation loops. Moreover domain stucture is delineated by relatively deep ething of over 10μ.抄録全体を表示PDF形式でダウンロード (3203K) -
中村 達, 後藤 俊成, 山中 惣之助1973 年 42 巻 5 号 p. 491-497
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーThe specific resistivity, temperature coefficient of resistance, superconducting transition temperature and structure of thin films of both titanium and titanium nitride were studied respectively.
The films were deposited on the glass substrates by reactive sputtering. At partial nitro-gen pressure of 4×10-4 Torr, temperature coefficient of resistance attained a minimum value of 70 ppm/°C, where a mixture of Ti and Ti2N was formed. At 1×10-3 Torr, specific resistivity attained a maximum value of 520 μΩcm, where TiN was formed. The superecondu-cting transition temperature was found to be 4.4K in the range from 8×10-4 Torr to 7×10-3 Torr. At pressures higher than 1×10-3 Torr, with increasing nitrogen pressure, specific resistivity and transition temperature decreased and temperature coefficient of resistance increased.抄録全体を表示PDF形式でダウンロード (1660K) -
両角 修四郎, 後藤 克也1973 年 42 巻 5 号 p. 498-501
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリーAn approximate calculation is given for the optical transfer function of grating spec-troscopes with large aberrations by the ap-plication of the method of stationary phase. Defocus, astigmatic curvature, and coma are taken into consideration as being the princi-pal cause of aberration in the usual grating mountings. The asymptotic expressions are de-rived for the optical transfer function in the presence of coma and in its absence.抄録全体を表示PDF形式でダウンロード (255K) -
大志万 繼影1973 年 42 巻 5 号 p. 503
発行日: 1973/05/10
公開日: 2009/02/09
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高橋 昭1973 年 42 巻 5 号 p. 504
発行日: 1973/05/10
公開日: 2009/02/09
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江口 正1973 年 42 巻 5 号 p. 505
発行日: 1973/05/10
公開日: 2009/02/09
ジャーナル フリー化学発光とは一般に化学反応に伴なう反応物質の励起とか,励起分子,あるいは原子が他の分子や原子への衝突による励起などによって起る光の放射を言うが,この発光現象を利用した窒素酸化物の分析計が自動車排気ガスや煙道排ガスの測定にひろく用いられている.抄録全体を表示PDF形式でダウンロード (94K) -
菅原 徹, 小松 勇, 松井 伸晴1973 年 42 巻 5 号 p. 506
発行日: 1973/05/10
公開日: 2009/02/09
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草鹿 履一郎, 釜 三夫1973 年 42 巻 5 号 p. 507-512
発行日: 1973/05/10
公開日: 2009/02/09
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福原 明, 黒田 正夫1973 年 42 巻 5 号 p. 513-518
発行日: 1973/05/10
公開日: 2009/02/09
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松田 功, 野上 義典, 鈴木 秀明, 石割 修一1973 年 42 巻 5 号 p. 519-525
発行日: 1973/05/10
公開日: 2009/02/09
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戸村 光一1973 年 42 巻 5 号 p. 526-531
発行日: 1973/05/10
公開日: 2009/02/09
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木下 敏雄, 鈴木 孝治1973 年 42 巻 5 号 p. 532-539
発行日: 1973/05/10
公開日: 2009/02/09
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小宮 勤一1973 年 42 巻 5 号 p. 540-542
発行日: 1973/05/10
公開日: 2009/02/09
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1973 年 42 巻 5 号 p. 551
発行日: 1973年
公開日: 2009/02/09
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