JPS5977346A - Analyzing apparatus for element composition of substance - Google Patents
Analyzing apparatus for element composition of substanceInfo
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- JPS5977346A JPS5977346A JP57187296A JP18729682A JPS5977346A JP S5977346 A JPS5977346 A JP S5977346A JP 57187296 A JP57187296 A JP 57187296A JP 18729682 A JP18729682 A JP 18729682A JP S5977346 A JPS5977346 A JP S5977346A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/20083—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials by using a combination of at least two measurements at least one being a transmission measurement and one a scatter measurement
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- Crystallography & Structural Chemistry (AREA)
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- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、放射性同位体から放出される放射線ケ利用し
て、工業用原材料等の各種処理工程においてＸクライン
中で物質元素組成を分析する装置に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an apparatus for analyzing the elemental composition of materials in an X-cline in various processing steps of industrial raw materials, etc., using radiation emitted from radioactive isotopes. Regarding.
石炭や鉱石などを取扱う各種産業の処理工程において、
それら物質の流れから試料を採取することなく、物質の
組成を刻々迅速に分析するオンライン分析が求められる
ようになり、このためＸ 、、、、、Ｉ！や中性子など
の放射線を利用する分析装置が開発され、一部では用い
られるようになった。しかしながら、測定対象となる工
業原拐料等の多くは不均質物体であり、組成、高密度と
もに不均一な分布をしているため、分析の正確さを祷る
ためにはその応用に制約があった。In the processing processes of various industries that handle coal, ore, etc.
There is now a need for online analysis that rapidly analyzes the composition of substances moment by moment without having to take samples from the flow of these substances. Analyzers that use radiation such as neutrons and neutrons have been developed and are now in use in some areas. However, many of the industrial particles that are the objects of measurement are heterogeneous objects, with uneven distributions in both composition and density, so there are restrictions on their application in order to ensure the accuracy of analysis. there were.
例えば、薬屋的な不均質物である石炭を測定対象とする
場合、Ｘ線の散乱や螢光Ｘ線発生を利用するには、Ｘ線
の透過力が弱いンζめに微粉粒に調整し充分に混合した
うえ測定表１ｍヲ平坦にし、かつ試料厚さをうすくして
おかなければならない。For example, when measuring coal, which is a heterogeneous substance similar to that used in drug stores, to utilize X-ray scattering and fluorescent X-ray generation, it is necessary to adjust it to fine powder so that the X-ray penetrating power is weaker. After mixing thoroughly, the measurement surface must be made flat by 1 m, and the sample thickness must be thin.
中性子の捕獲吸収によるガンマ＃ｊ！発生を利用する場
合は、中性子、ガンマ線ともに透過力が比較的大きいの
で、測定に係る有効体積はある程度太きく、測定対象物
自体に対する制約は少くなる。Gamma #j due to neutron capture and absorption! When using generation, the penetrating power of both neutrons and gamma rays is relatively large, so the effective volume for measurement is somewhat large, and there are fewer restrictions on the measurement object itself.
しかし、この場合にも、対象物の嵩密度及び水分の変化
は分析結果に相当の影響を及ぼすので、その影響ができ
る限シ少くなるような対象物の流れの状態（’ｊ４ｆｊ
、厚さなど）や測定の幾何学的条件をｊへ択し、さら
にそのうえで正確さを保１４ｔＥするため、高密度（ま
たは重量厚さ）及び水分を別の測定機器を用いて測定し
補償しなければならなかった。However, even in this case, changes in the bulk density and moisture content of the object have a considerable influence on the analysis results, so the flow conditions of the object ('j4fj
, thickness, etc.) and the geometrical conditions of the measurement, and then, in order to maintain accuracy, high density (or weight thickness) and moisture are measured and compensated using separate measuring equipment. I had to.
しかし、異なる仮数側の測定機器を用いて流れている測
定対象物の同一部分の測定を行うことは困りｉｌ！：’
であり、嵩密度、水分を正しく補償した分析値ケ・ｊ！
することが出来なかった。However, it is difficult to measure the same part of a flowing object using measuring instruments on different mantissa sides! :'
And the analytical value that correctly compensates for bulk density and moisture is ke・j!
I couldn't do it.
本発明の目的は、−上記した従来技術の欠点をなくシ、
測定対・１吻の嵩密度、水分を補正した分析値が得られ
る分析装置を提供するにある。The object of the present invention is to: - eliminate the drawbacks of the prior art mentioned above;
An object of the present invention is to provide an analysis device that can obtain analysis values corrected for the bulk density and moisture content of a measured pair of proboscises.
」１記目的を達成するため、本発明は、物質の流れにお
いてつねに同一部分に対して高速中性子とガンマ線の透
過率を測定し、水分と嵩密度と金求めるとともに、同じ
流れの部分から発生する中性子捕獲ガンマ線を同時に測
定することにより、水分、嵩密度を正しく補正した元素
成分を分析するようにしたものである。In order to achieve the above object, the present invention always measures the transmittance of fast neutrons and gamma rays in the same part of the material flow, determines the water content, bulk density, and gold, and also measures the transmittance of fast neutrons and gamma rays generated from the same part of the flow. By simultaneously measuring neutron-captured gamma rays, elemental components can be analyzed with moisture and bulk density correctly corrected.
高速中性子に対する質量吸収係数は、水素に関してとく
に大きく他の元素では小さい。他方ガンマ線に対する質
量吸収係数（低エネルギーガンマ線の場合を除き）は元
素によってあまり変らない。The mass absorption coefficient for fast neutrons is particularly large for hydrogen and small for other elements. On the other hand, the mass absorption coefficient for gamma rays (except for low-energy gamma rays) does not vary much depending on the element.
このため、前記両者の透過減衰率から水分（正しくは、
化学結合状態の如何によらない水素量）と高密度（又は
重量厚さ）が得られるものである。For this reason, water (correctly,
It is possible to obtain high hydrogen content (hydrogen content) and high density (or weight thickness) regardless of the chemical bond state.
しかも１個の線源と１個の検出器とによる測定のため、
高速中性子とガンマ線の画線束が壁間的に全く同一部分
を通り、し次がって測定対象物の同射材で取囲み同線源
から放出される高速中性子のうち一部が減速され測定対
象物内に拡散するようにし、減速中性子が測定対象物に
捕獲吸収された際に発生する中性子捕獲ガンマ線全検出
し、そのガンマ諌エネルギーを測定解析することによっ
て、’ｌ！１足ノし素又は多種類の元素の分析を行う。Moreover, since the measurement is performed using one radiation source and one detector,
The streak flux of fast neutrons and gamma rays passes through the same part of the wall, and is then surrounded by the radiation material of the measurement target, where some of the fast neutrons emitted from the source are decelerated and measured. By detecting all of the neutron-captured gamma rays generated when decelerated neutrons are captured and absorbed by the measurement object, and measuring and analyzing the gamma energy, 'l! Analyzes a single element or multiple types of elements.
この際、回じ中性子線源は前記の方法により高速中性子
線妃かつガンマ線源として、上記の分析対象と同じ部分
の水分、嵩密度測定に同時に用いられておシ、分析値、
水分値、嵩密度値の間の関係を演算補正することによっ
て最終的に正確な元素組成の分析が出来るものである。At this time, the circular neutron source is simultaneously used as a fast neutron source and a gamma ray source to measure the moisture content and bulk density of the same area as the above-mentioned analysis target.
By calculating and correcting the relationship between the moisture value and the bulk density value, accurate elemental composition analysis can finally be performed.
以下に本発明の実施例について説明する。 Examples of the present invention will be described below.
第１図において、例えば２５２Ｃｆの同位体中性子線源
１０をビスマス又は鉛などの重金属物質からなる線源側
遣蛾兼コリメーメ１２とともに用いるとき、線源１０か
ら放出される平均約２Ｍ−６−Ｖの高速中性子線１４と
平均約ＩＭ−＋ｖのガンマ線１６とは、コリメータ１２
により適当にコリメートされた線束となって測定対象物
容器１８の中の測定対象物２０に投射される。高速中性
子線１４及びガンマ線１６のうち測定対象物２０を透過
し重金属からなる検出器側コリメータ２２を通過しタモ
ノは、有機シンチレータ２４及び光電子増１￥！ｆ管２
６からなる検出器により検出され、光電子増倍管２６の
出力パルス１７１号はパルス波形弁別回ＩＩｔ′６２８
により高速中性子とガンマ線との各／’／ｌ／ス領号に
分けられそれぞれスケーラ−３０及び３２により計数さ
れる。高速中性子及びガンマ線の計数は、それぞれ測定
対象物が空のときの各計数比をとることによって各透過
減衰率が得られ、これから前記により水分及び高密度の
値が算出される。In FIG. 1, when an isotopic neutron source 10 of, for example, 252 Cf is used with a source-side moth and collimator 12 made of a heavy metal material such as bismuth or lead, an average of about 2M-6-V is emitted from the source 10. The fast neutron beam 14 and the gamma ray 16 with an average of about IM-+v
A properly collimated beam is projected onto the measurement object 20 in the measurement object container 18. Among the fast neutron beams 14 and gamma rays 16, those that pass through the measurement object 20 and pass through the detector-side collimator 22 made of heavy metals are combined with an organic scintillator 24 and a photoelectron multiplier! f tube 2
The output pulse No. 171 of the photomultiplier tube 26 is detected by a detector consisting of a pulse waveform discrimination circuit IIt'628.
The neutrons are divided into /'/l/s regions of fast neutrons and gamma rays and counted by scalers 30 and 32, respectively. For counting fast neutrons and gamma rays, each transmission attenuation rate is obtained by taking the respective counting ratio when the object to be measured is empty, and from this, the values of moisture and high density are calculated as described above.
他方、線源１０から放出される高速中性子の１が測定対
象物２０に捕獲吸収とれるとき、捕獲元素に固有な中性
子捕獲ガンマ線４０が発生する。On the other hand, when one of the fast neutrons emitted from the radiation source 10 is captured and absorbed by the measurement object 20, neutron capture gamma rays 40 specific to the captured element are generated.
同ガンマ線４０を減速中性子フィルター４２ケつけた固
体ガンマ線検出器４４にて１契出し、４欠出器４４の出
力パルスをパルス波高分析器４６にかけガンマ線エネル
ギースベ、クトル）野析を行うことにより、中性子捕獲
ガンマ線は元素ごとに特徴的なエネルギーをもった線ス
ペクトルを有するので、各スペクトルピークの強度から
測定対象物中の各元素の６“４匿が得られる。こうして
得られた谷元素分析値は、前述のように水分（水素量）
及び高密ｊ屍の影響を受けている。また、同様に上述の
水分、徂
嵩密度測足値も元累鍔の影響を幾分受けている。One gamma ray 40 is detected by a solid-state gamma ray detector 44 equipped with 42 deceleration neutron filters, and the output pulses of the four detectors 44 are applied to a pulse height analyzer 46 for gamma ray energy level analysis. Since neutron-captured gamma rays have a line spectrum with characteristic energy for each element, the 6"4 concentration of each element in the object to be measured can be obtained from the intensity of each spectral peak. The valley elemental analysis value obtained in this way is, as mentioned above, moisture (hydrogen content)
and is affected by high-density corpses. Similarly, the above-mentioned moisture and bulk density measurements are also influenced to some extent by the moto-tsuba.
そこで、これら分析値、水素量、嵩密度の間の関係全会
らかじめ求めてお÷、それを演算処理装置さ
４８で演算補正することによって、正しい元素組成分析
値が得られる。Therefore, correct elemental composition analysis values can be obtained by calculating the relationship between these analysis values, hydrogen content, and bulk density in advance, and calculating and correcting the results using the arithmetic processing unit 48.
第１図に示されるように、減速中性子３８の拡散は、測
定対象物の中で、高速中性子＃ｊ１４及びガンマ線１６
の線東部に中心にある程夏広い範囲に広がっており、こ
れにより流れの断面の平均的な分析が可能になる。これ
に対して、高速中性子線１４とガンマ線１６の両線束は
測定対象物２０の断面の中心部を透過するので、水素量
、嵩密度の測定に係る体積が比較的限定されることにな
るが、測定対象物２０が流れている物体では、実用上充
分な平均性が得られる。また、組成分析値に対する水素
量及び嵩密度の補正にｌＪｊ しては、補正の程度はあ
まシ大きなものとはならないので、測定壁間の幾分の相
違は問題とならず、流れている測定対象物に対して実用
上回−断１ｍについて元素組成、水素量及び嵩密度を測
定していることになる。As shown in FIG. 1, the diffusion of decelerated neutrons 38 causes fast neutrons #j14 and gamma rays 16 in the object to be measured.
The more the line is centered in the eastern part of the line, the more it spreads out over a wide area, which allows for an average analysis of the flow cross section. On the other hand, since both the fast neutron beam 14 and gamma ray 16 flux pass through the center of the cross section of the measurement object 20, the volume involved in measuring the amount of hydrogen and bulk density is relatively limited. , when the object 20 to be measured is a flowing object, a practically sufficient averageness can be obtained. In addition, when correcting the hydrogen content and bulk density for the compositional analysis values, the degree of correction is not very large, so slight differences between measurement walls are not a problem, and flowing measurements This means that the elemental composition, hydrogen content, and bulk density of the object are measured for a practical cross section of 1 m.
第２図は、測定対象物容器１８が比４グ的小さい場合の
実施例である。比較的少い鼠の測定対象物２０に対して
分析の感度全同上させるため、中性子減速、反射材３６
で測定対象物容器１８を取囲むように構成している。ま
た、それに伴って、検出器側コリメータ２２０部分から
の中性子捕獲ガンマ線の発生及びその検出器４４による
検出ケ防ぐ目的で、ホウ累含有ポリエチレンなどからな
る減速中性子吸収体２２Ａ’に配置しである。これら以
外はすべて第１図の実施例と同様である。FIG. 2 shows an embodiment in which the measurement object container 18 is relatively small. In order to increase the sensitivity of analysis for the comparatively small number of measurement objects 20 of mice, a neutron moderating and reflecting material 36 is used.
It is configured to surround the measurement object container 18. In addition, in order to prevent the generation of neutron-captured gamma rays from the detector-side collimator 220 and their detection by the detector 44, the neutron absorber 22A' is arranged in a decelerated neutron absorber 22A' made of polyethylene containing boron or the like. Everything else is the same as the embodiment shown in FIG.
以上の実施例においては、いずれも水素量、高密度測定
用のパルス波形弁別型検出器と組成分析用のエネルギー
分析型ガンマ線検出器とは別個のものを用いているが、
パルス波形弁別型の有機シンチレータとエネルギ分析型
の無機シンチレータとを一本の光゛１戊子増倍管に肌合
せて用いることで、検出グローフラ一本とすることもで
きる。In each of the above examples, a pulse waveform discrimination type detector for measuring hydrogen amount and high density and an energy analysis type gamma ray detector for composition analysis are used separately.
By using a pulse waveform discrimination type organic scintillator and an energy analysis type inorganic scintillator in a single photomultiplier tube, a single detection glow flasher can be used.
２烏３図にその実施例を示す。Examples are shown in Figures 2 and 3.
中性子線源１０を遮蔽兼コリメータ１２に装備し、線？
Ａ１０から放射される高速中性子線１４とガンマ線１６
のうち、対象物容器１８及び測定対象物２０會透過した
ものを、検出器側コリメータ２２中に設置した有機シン
チレータ２４及び光電子増倍管２６により検出する。他
方、前述の実施例同様にｊｌ１１定対象物２０中に拡散
した減速中性子３８が測定対象物２０に捕獲吸収された
際に発生ずる中性子捕獲ガンマ線４０を無機シンチレー
タ５０及び光電子増倍管２６により検出する。両シンチ
レーク２４及び５０は光学的に充分損失の少いように光
電子増倍管２６に結合されている。光［ｌＬ子増倍管２
６の出力パルスは、）＜ルス波形弁別器５２によって、
有機シンチレータ２４による高速中性子パルス５４及び
同ガンマ線ノくルス５６と、それら両者から際立ってノ
くルス波形の異る無機シンチレータ５０のガンマ線ノく
ルス５８とに振り分けられる・一方、光′電子増倍管２
６の出ノｊ／クルスは、別に比例増巾器６０で増巾され
リニアゲート６２を通過したのち、パルス波高分析器５
２によｐエネルギースペクトル解析されるが、リニアゲ
−１−６２はパルス信号５８によってのみ開かれるので
、無機シンチレータ５０の検出したガンマ線パルスのみ
がエネルギー解析の対象となる。このようにして一本の
測定プローブによって、前述の実施例における２個のプ
ローブによる測定と同等の効果を上げることができる。A neutron beam source 10 is equipped with a shield/collimator 12, and a neutron beam source 10 is equipped with a shield/collimator 12.
Fast neutron beam 14 and gamma ray 16 emitted from A10
Of these, those that have passed through the object container 18 and the object to be measured 20 are detected by an organic scintillator 24 and a photomultiplier tube 26 installed in a collimator 22 on the detector side. On the other hand, as in the previous embodiment, neutron-captured gamma rays 40 generated when the decelerated neutrons 38 diffused into the object 20 are captured and absorbed by the object 20 to be measured are detected by the inorganic scintillator 50 and the photomultiplier tube 26. do. Both scintillators 24 and 50 are optically coupled to a photomultiplier tube 26 with sufficiently low loss. Light [lL electron multiplier 2
The output pulse of 6 is determined by the pulse waveform discriminator 52,
They are divided into a fast neutron pulse 54 and a gamma ray pulse 56 generated by the organic scintillator 24, and a gamma ray pulse 58 of the inorganic scintillator 50, which has a significantly different pulse waveform from both of them.On the other hand, photoelectron multiplication tube 2
6 is amplified by a proportional amplifier 60, passed through a linear gate 62, and then passed through a pulse height analyzer 5.
However, since the linear gate 1-62 is opened only by the pulse signal 58, only the gamma ray pulse detected by the inorganic scintillator 50 is subjected to energy analysis. In this way, one measurement probe can achieve the same effect as the measurement using two probes in the previous embodiment.
以上述べた如く、本発明では単一の中性子線源を効果的
に利用し、流れている測定対象物の同−政商に対して、
高速中性子及びガンマ線の透過測定と減速中性子の捕獲
に伴うガンマ線のエネルギースペクトル測定全同時に行
い、水分（水素量）、嵩密度の変化を正確に測定すると
ともに、それらを補正した正確な元素組成の分析値を得
ることが可ｔｊヒになる。−！た、従来不可能であった
不均質な塊状物質についてもオンライン中で正確な分析
ができる。As described above, in the present invention, a single neutron beam source is effectively used to
Transmission measurement of fast neutrons and gamma rays and energy spectrum measurement of gamma rays accompanying the capture of decelerated neutrons are performed simultaneously to accurately measure changes in moisture (hydrogen content) and bulk density, as well as accurate elemental composition analysis that corrects for them. It becomes possible to obtain the value. -! In addition, it is possible to conduct accurate online analysis of heterogeneous bulk materials, which was previously impossible.
１ン１而の）１８単な説明
ｔ１３１図Ｑ」１、本発明に係る装置の基本構成を示す
＃ｉｌ成図、第２図は測定対象容器が比較的小さい場合
の検出部の基本構成を示す構成図、第３図は検出器を単
一にした場合の装置の基本構成を示す構成図である。1) 18 Simple explanation t131 Figure Q'1. A diagram showing the basic configuration of the device according to the present invention. Figure 2 shows the basic configuration of the detection unit when the container to be measured is relatively small. FIG. 3 is a block diagram showing the basic structure of the apparatus when a single detector is used.
１０・・・線源、１２．２２・・・コリメータ、１４゜
３４・・・高速中性子線、１６・・・ガンマ線、１８・
・・測定対象物容器、２０・・・測定対象物、２４・・
・有機シンチレータ、２６・・・光電子増倍管、２８・
・・パルス波形弁別回路、３０．３２・・・スケーラ、
３６・・・減速、反射携、３８・・・減速中性子、４０
・・・中性子捕獲ガンマ線、４２・・・減速中性子フィ
ルタ、４４・・・固体ガンマ線検出器、４６・・・パル
ス波高分析器、第１図
第２図
第３図10...Radiation source, 12.22...Collimator, 14°34...Fast neutron beam, 16...Gamma ray, 18.
...Measurement object container, 20...Measurement object, 24...
・Organic scintillator, 26...Photomultiplier tube, 28・
... Pulse waveform discrimination circuit, 30.32... Scaler,
36...Deceleration, reflex movement, 38...Deceleration neutron, 40
... Neutron capture gamma ray, 42 ... Deceleration neutron filter, 44 ... Solid-state gamma ray detector, 46 ... Pulse height analyzer, Fig. 1 Fig. 2 Fig. 3
Claims (1)
源、この放射線源から放出された高速中性子とガンマ線
とを測定対象物に投射し、測定対象物を透過した高速中
性子とガンマ線とを検出する第１の検出器、前記放射線
源から放出された高速中性子の一部を減速させた後測定
対象物に投射し、測定対象物によって減速中性子が捕獲
吸収される際に光生する中性子捕獲ガンマ線を検出する
第２の検出器、前記第１、第２の検出器からの信号に基
づいて測足対塚物の元素成分を求める演算装置とより溝
成したことを特徴とする物質元素組成分析装置。1. A radiation source that generates both 116-speed neutrons and gamma rays, a radiation source that projects the fast neutrons and gamma rays emitted from this radiation source onto the measurement target, and detects the fast neutrons and gamma rays that have passed through the measurement target. Detector 1 decelerates a portion of the fast neutrons emitted from the radiation source and projects them onto the object to be measured, and detects neutron-captured gamma rays that are photogenerated when the decelerated neutrons are captured and absorbed by the object to be measured. An apparatus for analyzing the elemental composition of a substance, comprising: a second detector; and an arithmetic unit for determining the elemental composition of the object to be measured based on the signals from the first and second detectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57187296A JPS5977346A (en) | 1982-10-25 | 1982-10-25 | Analyzing apparatus for element composition of substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57187296A JPS5977346A (en) | 1982-10-25 | 1982-10-25 | Analyzing apparatus for element composition of substance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5977346A true JPS5977346A (en) | 1984-05-02 |
| JPS6362694B2 JPS6362694B2 (en) | 1988-12-05 |
Family
ID=16203511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57187296A Granted JPS5977346A (en) | 1982-10-25 | 1982-10-25 | Analyzing apparatus for element composition of substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5977346A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171341A (en) * | 1984-09-17 | 1986-04-12 | Japan Atom Energy Res Inst | Component analyzing method |
| EP0227246A2 (en) * | 1985-10-25 | 1987-07-01 | United Kingdom Atomic Energy Authority | Analysis of fluids using a source of fast neutrons |
| JPH05505675A (en) * | 1990-03-28 | 1993-08-19 | マーチン・マリエッタ・エナジー・システムズ・インク | Hidden explosive detection device using pulsed neutron and X-ray interrogation |
| US5479023A (en) * | 1992-04-09 | 1995-12-26 | Institute Of Geological And Nuclear Sciences, Ltd. | Method and apparatus for detecting concealed substances |
| WO2019241830A1 (en) * | 2018-06-21 | 2019-12-26 | Chrysos Corporation Limited | System and method for moisture measurement |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256596A (en) * | 1975-10-29 | 1977-05-10 | Atomic Energy Of Australia | Method of analyzing coal |
-
1982
- 1982-10-25 JP JP57187296A patent/JPS5977346A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5256596A (en) * | 1975-10-29 | 1977-05-10 | Atomic Energy Of Australia | Method of analyzing coal |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6171341A (en) * | 1984-09-17 | 1986-04-12 | Japan Atom Energy Res Inst | Component analyzing method |
| EP0227246A2 (en) * | 1985-10-25 | 1987-07-01 | United Kingdom Atomic Energy Authority | Analysis of fluids using a source of fast neutrons |
| JPH05505675A (en) * | 1990-03-28 | 1993-08-19 | マーチン・マリエッタ・エナジー・システムズ・インク | Hidden explosive detection device using pulsed neutron and X-ray interrogation |
| US5479023A (en) * | 1992-04-09 | 1995-12-26 | Institute Of Geological And Nuclear Sciences, Ltd. | Method and apparatus for detecting concealed substances |
| WO2019241830A1 (en) * | 2018-06-21 | 2019-12-26 | Chrysos Corporation Limited | System and method for moisture measurement |
| CN112313504A (en) * | 2018-06-21 | 2021-02-02 | 澳洲快索有限公司 | System and method for humidity measurement |
| CN112313504B (en) * | 2018-06-21 | 2024-04-26 | 澳洲快索有限公司 | System and method for humidity measurement |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6362694B2 (en) | 1988-12-05 |
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