DE405076C - Procedure for determining and measuring the intensity of X-rays - Google Patents
Procedure for determining and measuring the intensity of X-raysInfo
- Publication number
- DE405076C DE405076C DEJ24162D DEJ0024162D DE405076C DE 405076 C DE405076 C DE 405076C DE J24162 D DEJ24162 D DE J24162D DE J0024162 D DEJ0024162 D DE J0024162D DE 405076 C DE405076 C DE 405076C
- Authority
- DE
- Germany
- Prior art keywords
- rays
- intensity
- determining
- measuring
- procedure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Description
Verfahren zur Feststellung und lnessung der Intensität von Röntgenstrahlen. Das vorliegende Verfahren hat den Zweck, das Vorhandensein und die Intensität von Röntgenstrahlen (besonders von schwachen) nach einer bisher nicht bekannten Methode festzustellen und zu messen. Während sich die bisher üblichen Verfahren fast durchweg der Messung von Sättigungsströmen in Ionisierungskammern bedienen, bei denen eine große Anzahl von Elementarprozessen erforderlich ist, um eine meßbare Wirkung zu erzielen, beruht das vorliegende Verfahren auf der Sichtbarmachung bzw. Registrierung einzelner durch die Röntgenstrahlern ausgelöster Elektronen. Dies ist dadurch möglich, daß bereits ein einziges durch ein Röntgen@trahlquant ausgelöstes Elektron die Fähigkeit besitzt, eine Spitzenentladung auszulösen, ähnlich wie dies von den (3-Strahlen der radioaktiven Substanzen bekannt ist und bei der Zählung von j3-Teilchen mit der sogenannten Geigerschen Spitzenkammer benutzt wird. Sofern man also den von den Röntgenstrahlen an irgendwelcher festen, flüssigen oder gasförmigen Materie ausgelösten Elektronen die Möglichkeit bietet, in eine Geigersche Spitzenkammer einzutreten, bildet die Anzahl der in der Zeiteinheit eintretenden Entladungsstöße ein Maß für die Intensität der auslösenden Röntgenstrahlen. Eine beispielsweise Anwendung des Verfahrens wird durch die Zeichnung erläutert. Ein durch die engen Blenden a und b begrenztes Röntgenstrahlenbündel tritt durch eine Öffnung c in die Geigersche Kammer ein und verläßt diese durch die zweite öffnung d. Die äußere Belegung e der Kammer ist auf ein positives Potential von passender Größe gegen Erde aufgeladen. Die Nadel f ist über einen hohen Widerstand g geerdet, zu welchem ein Saitenelektrometer h parallel geschaltet ist. Die an den Luftmolekillen im Innern der Kammer ausgelösten Elektronen rufen Entladungsstöße hervor, welche in Form von Zuckungen des Elektrometerfadens beobachtet und gezählt werden. Zur. Zählung der Entladungsstöße können auch-andere geeignete Apparate, wie Galvanometer, Telephon u. dgl., verwendet werden. Auch die Benutzung von Relais zur Betätigung einer Addiermaschine ist möglich.Method of determining and measuring the intensity of X-rays. The purpose of the present method is to determine and measure the presence and intensity of X-rays (especially weak ones) using a method not previously known. While the previously common methods almost always use the measurement of saturation currents in ionization chambers, in which a large number of elementary processes are required to achieve a measurable effect, the present method is based on the visualization or registration of individual electrons released by the X-ray emitters. This is possible because a single electron triggered by an X-ray quantum already has the ability to trigger a peak discharge, similar to what is known from the (3-rays of radioactive substances and when counting j3-particles with the so-called Geiger's If the electrons released by the X-rays on any solid, liquid or gaseous matter are given the opportunity to enter a Geiger tip chamber, the number of discharge surges occurring in the unit of time is a measure of the intensity of the X-rays that trigger An example of the application of the method is illustrated in the drawing: An X-ray beam limited by the narrow diaphragms a and b enters the Geiger chamber through an opening c and leaves it through the second opening d. The outer coating e of the chamber is at a positive potential of appropriate size against Earth charged. The needle f is grounded via a high resistance g, to which a string electrometer h is connected in parallel. The electrons released on the air molecules inside the chamber cause bursts of discharge, which are observed and counted in the form of twitching of the electrometer thread. To the. Other suitable apparatus, such as galvanometer, telephone and the like, can also be used for counting the discharge pulses. It is also possible to use relays to operate an adding machine.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ24162D DE405076C (en) | 1923-11-14 | 1923-11-14 | Procedure for determining and measuring the intensity of X-rays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ24162D DE405076C (en) | 1923-11-14 | 1923-11-14 | Procedure for determining and measuring the intensity of X-rays |
Publications (1)
Publication Number | Publication Date |
---|---|
DE405076C true DE405076C (en) | 1924-10-30 |
Family
ID=7201692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ24162D Expired DE405076C (en) | 1923-11-14 | 1923-11-14 | Procedure for determining and measuring the intensity of X-rays |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE405076C (en) |
-
1923
- 1923-11-14 DE DEJ24162D patent/DE405076C/en not_active Expired
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