Journal of the Mass Spectrometry Society of Japan

質量分析計による電離解離の研究

鹿又一郎

1959 年 1959 巻 13 号 p. 3-17
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_3

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メデイアン面外のイオン軌道

菅原吉彦

1959 年 1959 巻 13 号 p. 18-23
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_18

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The ion beams off the median plane and parallel to it travel in a different fringing field from that in the median plane. So, the ion paths off the medain plane is different from that in the median plane, and the image the source slit produced by the ion beams off the median plane is shifted slightly along the y-axis. In this paper, the positions of the images are calculated numerically.

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ウラン同位体存在比測定用質量分析計の試作

森戸望, 岡本潤一, 中嶋康雄, 津山斉, 大村一郎, 野田保, 野口弥

1959 年 1959 巻 13 号 p. 23-34
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_23

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A 90° sector field mass spectrometer with a 350 mm radius of curvature was built for isotopic analysis of uranium. In order to improve the sensitivity, the ion accelerating voltage was raised up to 5kV and the ion current was measured with a vibrating reed amplifier. Two kinds of ion source were employed. One of them was an ordinary ion source for gas analysis and the other was a surface ionization source which could be used not only as a single-filament source, but as a triplefilament source. The natural isotope abundance ratio of uranium was measured with this instrument. By use of the gas analysis ion source, the ratio ²³⁵U/²³⁸U in UF6 was measured to be 0.738±0.004%. Using the single-filament source and the friple, filament source, the ratio ²³⁵U/²³⁸U in UO2(NO3)26H2O was measured to be 0.719±0.007% and 0.722±0.004%, respectively. The result obtained in case of UF6 seemed to be effected to some extent by the impurities contained in the sample. This work was supported by the govermental contract.

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Barth回路の零点偏移消去法

江副博彦

1959 年 1959 巻 13 号 p. 34-36
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_34

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The Barth-type circuit for balancing out power supply voltage changes is re-examined and an improved design to determine the circuit parameters has been developed which allows the circuit to balance out the zero-drift due to the drifts in tube currents also. Design procedures are presented as well as its experimental result.

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微少イオン電流検出用二次電子増倍管の研究(I)

道島正美

1959 年 1959 巻 13 号 p. 36-47
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_36

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In this paper, preliminary experiments to determine the design and construction of a twelve-stage electron multiplier tube, which is operated with high stable gain for the detection of very small ion currents in a mass spectrometer, are described. The simple effective activating method of electrodes made of copper-beryllium alloy sheet was considered with phase diagram, and then electrolytic polishing was used after ?A-phase was separated out by hardening and tempering. The electrodes were also observed with the metallurgical microscope, electron microscope and diffraction. On the operational characteristics of the demountable five-stage multiplier, experiments were compared with electric potential field of its multiplier, which was measured by the conducting sheet method.

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動作動方式による極微量気体試料の質量分析

第1部極微量気体試料用直視型質量分析計の試作

佐々木申二, 槇田勉, 岩佐仁雄, 石原良一, 飯島孝志

1959 年 1959 巻 13 号 p. 48-57
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_48

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A simple panoramic mass spectrometer has been constructed for the analysis of small gas samples employing 60°deflection analyser tube in a permanentmagnetic field, a standard electoron bombardment type ion source, oscillating accelerating voltage, a. c. amplifiers, and oscilloscope.This mass spectrometer, when used with small sample reservoir with a special device and a rapid scan, will enable to analyse gas samples of about 10^-6ml NTP, without isolating the analyser tube from the exhaust system, that is, by the usual dynamic method

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動作動方式による極微量気体試料の質量分析

第2部極微量試料の定量分析

槇田勉

1959 年 1959 巻 13 号 p. 58-61
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_58

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A small ampoule containing a very small amount of gas sample is introduced into the small sample reservoir of the panoramic mass spectrometer described in our preceeding paper. At the moment when the ampoule is broken, the rapid scan is started and a series of rapidly decreasing peaks on the cathode ray tube are photographed in rapid succession, say, every one second. This dynamic operation will minimize undesirable effects due to adsorption and desorption on the part of the analyser tube and the cumulative change caused by the filament which are unavoidable in the static operation.The present method has been cursorily to our satisfaction with neon samples about 10-6ml NTP.

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静作動質量分析計によるB-A計の吸着の研究

鹿又一郎, 小栗多計夫, 金子洋三郎

1959 年 1959 巻 13 号 p. 62-67
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_62

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The pumping action of the Bayard-Alpert gauge(B-A gauge)operated in ultra high vacuum was studied by use of a statically operated mass spectrometer. The sample gases measured were rare gases, carbon monoxide, nitrogen and methane, all of which are analyzable by static operation. The results are summarized as follows; The electrical pumping speed of the B-A gauge for A, CO, and N2 were 0.050, 0.06 and 0.12l/sec, respectively. The power of chemisorption of CO on the clean surface of Mo and W was remarkably large, and the rate of chemisorption to the electrodes of the B-A gauge was about 1.5 l/sec, but not chemisorbed on the glass surface. N2 was chemisorbed on the clean surface of W, but not that of Mo. No chemisorption of rare gases on the clean surface could be observed.

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タングステン(線条およびリボン)の炭化処理に関する研究第II 報

早川晃雄, 西下孝夫

1959 年 1959 巻 13 号 p. 67-71
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_67

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Though in the mass spectrometer for analytical use, tungsten filaments are usually carbonized to stabilize sensitivity and pattern coefficient, the stabilizing.effect of the carbonization has not been fully elucidated yet. We carbonized tungsten wire and ribbon with butene-2 and investigated the relation between the carbonizing conditions and the structure of tungsten carbides formed.For this analysis both the electron and the X-ray diffraction were used. The results obtained indicate that α-W2C is formed by a moderate treatment with butene-2, while WC is formed by a prolonged treatment.

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タングステンと白金表面におけるアルカリ金属の電離

大村一郎, 森戸望, 中島康雄, 津山斉, 岡本潤一

1959 年 1959 巻 13 号 p. 71-78
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_71

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Surface ionization of alkali metals has been studied with mass spectrometers. The instruments used are a Hitachi RMU-5 mass spectrometer(20cm, 90°), a Hitachi RMS-3 mass spectrometer(10cm, 60°)and an experimental instrument(35cm, 90°). The ion sources are similar to those reported by Inghram.The filaments used are of tungsten and platinum. The samples used are LiCl, KOH, KCl, KI, RbCI, and CsCl. The ion current varies for several minutes after a sudden change of filament temperature and becomes stationary. The behaviour depends not only on the filament material, but on the sample.Halogen as well as hydroxyl on the filament surface seem to give different influences on the effective work function of filament material according to their kinds. During this transitional period, the ratio of ion current corresponding to the isotopes also varies, and the precise determination of isotope abundances cannot be expected. The ion current, of cource, varies in accordance with the temperature of the ionization filament, but it does not obey the Saha-Langmuir's equation. A maximum appears at the filament temperature of about 1000°. The temperature, at which the maximum, appears depends slightly on the sorts of alkali metals. This phenomenon can be observed in both cases of single-filament source and triple-filament source.

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熱拡散法による重酸素の濃縮

小林康司, 高橋政司, 畑田元義

1959 年 1959 巻 13 号 p. 79-84
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_79

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Enrichment of heavy oxygen isotopes was carried out by use of thermal diffusion columns, using the normal oxygen gas as the raw material. The dimention of the unit separation column was as follows: inner diameter the wall was 10mm, outer diameter of the hot wire was 0.72mm and the effective length of the column was 295cm. The apparatus consisted of eleven columns, overall effective length being 17.7m. Each column was constructed carefully so as to keep the wire at the centre in the column using micalex spacers.It was found that the equilibrium separation factor of unit column was 7.5 and approached the theoretical value, probably due the improvement of geometrical condition between the cold wall and the hot wire. If the equilibrium is established, the concentration of heavy oxygen in the bottom reservoir would reach more than 90 atom %. The transport of the heavy oxygen amounted to 1.8cc(18O2)/day.

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重窒素でラベルした蛋白質およびアミノ酸による小児の蛋白代謝の研究〔其の1〕

重窒素クエン酸アンモニウムによる小児の窒素代謝の研究(第二報)

土田竜也, 高井俊夫

1959 年 1959 巻 13 号 p. 84-87
発行日: 1959/09/30
公開日: 2011/07/05

DOIhttps://doi.org/10.5702/massspec1953.1959.13_84

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The authers studied the excretion of N¹⁵ in two cases after administering orally the N¹⁵ labeled ammonium citrate(42.3 atomic % excess). One case was a healthy male infant of 3 and 3/4 years old with the body weight of 12.9 Kg and 373.2 mg(25.37 meq as N¹⁵ )was administered orally. The excretion of administered N¹⁵ in the urine reached a state of saturation in about 2 days and was approximated by an exponetial function. From the analysis of the results, it was estimated that roughly about 65% of the administered N¹⁵ was excreted in about 3 days. The excretion rate of N¹⁵ may be analysed into two portions: one is a rapidly excreted urea cycle with a half life of about5hours, while another the other slow metabolic pathway or pool with a half life of about 36 hours. The total nitrogen excretion was roughly approximated by the synthesis of the two functions representing the rapid and the slow metabolic route. Another case was a male infant of 5 and 5/12 years old with the body weight of 16 Kg, who was suffering from nephrosis, and 473 mg(31.57 meq as N¹⁵)of N¹⁵ labeled ammonium citrate was administered orally. Almost all of the administered N¹⁵ was excreted in about 2 days and 78% of the administered N¹⁵ was excreted in urine during 4 days. Its excretion rate was approximated by an exponential function with the same tendency as in the case of urea which was reported previously in the preliminary note. The half excretion time was about 5 hours. The measurement of the N¹⁵ atomic % was carried out by Prof. Hayakawa of Osaka Prefectural University with the Hitachi Mass Spectrometer of RM-C Type.

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常例的な分析への質量分析の適用法

低級炭化水素の質量分析

大島昌三

1959 年 1959 巻 13 号 p. 88-97
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_88

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通信(その一)

早川晃雄

1959 年 1959 巻 13 号 p. 98-109
発行日: 1959/09/30
公開日: 2010/06/28

DOIhttps://doi.org/10.5702/massspec1953.1959.13_98

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エラータ : 扇形集束磁場に関する考察

1959 年 1959 巻 13 号 p. e1a
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1a

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エラータ : 物理分析としての質量分析とガスクロマトグラフィ

1959 年 1959 巻 13 号 p. e1b
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1b

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エラータ : 気体および液体の分析法としての質量分析法とガスクロマトグラフィー(附赤外線吸収スペクトル分析法)

1959 年 1959 巻 13 号 p. e1c
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1c

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エラータ : 石油炭化水素の分析

1959 年 1959 巻 13 号 p. e1d
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1d

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エラータ : イオン軌道に対する端縁磁界の影響

1959 年 1959 巻 13 号 p. e1e
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1e

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エラータ : 質量分析計による鉛同位体存在比の測定

1959 年 1959 巻 13 号 p. e1f
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1f

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エラータ : Mattauch型二重収束質量分析器による化学分析(I)

1959 年 1959 巻 13 号 p. e1g
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1g

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エラータ : Mattauch型二重収束質量分析器による化学分析(I)

1959 年 1959 巻 13 号 p. e1h
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1h

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エラータ : Mattauch型二重收束質量分析器による化学的研究(I)

1959 年 1959 巻 13 号 p. e1i
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1i

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エラータ : 亜硫酸ガス中の微量不純物,特に酸素および炭酸ガスの質量分析計およびガスクロマトグラフによる分析

1959 年 1959 巻 13 号 p. e1j
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1j

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エラータ : 重窒素クエン酸アンモニウムによる小児の窒素代謝について〔予報〕

1959 年 1959 巻 13 号 p. e1k
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1k

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エラータ : 質量スペクトル解析法IV

1959 年 1959 巻 13 号 p. e1l
発行日: 1959年
公開日: 2011/03/01

DOIhttps://doi.org/10.5702/massspec1953.1959.13_e1l

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