Zur Energie‐Reichweite‐Beziehung der Agfa‐K 2‐Kernspuremulsion

Bebel, D.

doi:10.1002/andp.19604600304

Cited by 3 publications

(3 citation statements)

References 16 publications

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“…MEDVECZKY and G. SOMOGYI data: a) our investigations were carried out in air containing exactly less t h a n 6 0 % relative humidity, b) the composition of emulsions is not completely identical in the different p r e p a r a t i o n s [1]. S u m m i n g up our investigations, ir can be stated t h a t in Agfa K2 nuclear emulsions, ir is BEBEL'S calculated values t h a t correspond to the range- Ep Mev Fig.…”

Section: The Errors Indicated In the Figures Ate Statistical Errors Omentioning

confidence: 97%

“…Range-energy relation of Agfa K2 nuclear emulsions for protons. The uninterrupted curve represents BEBEL'S calculations [1] and the dotted curve those of LANIUS [2] X designates data measured on and reduced from Th stars [6] designates data measured on tracks of recoil protons energy relation of p r o t o n s I t is, however desirable to e a r r y out the calibration also at energies not yet investigated.…”

Section: The Errors Indicated In the Figures Ate Statistical Errors Omentioning

confidence: 99%

“…The range-energy relation of Agfa K2 emulsions was investigated by LxNIvs [2] and BEBEL [1]. Both authors carried out calculations for protons, and obtained the calibration points by measuring and reducing the range of alpha-particles from the decay series of Th.…”

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Range of protons in the Agfa K2 nuclear emulsion

Medveczky

Somogyi

1961

Acta Phys. Hung.

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Presentcd by A. Szalay. --Receivcd 11. XI. 1960) By measuring the range-energy curve of recoil protons produced in the nuclear emulsion by reactions H2(d, n) He a and Ha(d, n) He 4, calibration points were obtained to determine the range-energy relation of the Agfa K2 emulsion. The measured ranges showed good agreement within the error limits with results of calculations for Agfa K2 emulsion containing 60~o relative humidity [1].The photoemulsion method cannot be applied to determine the energy of particles without precise knowledge of their range-energy relation. Therefore it is not surprising that in the literature such a great number of both calculated and measured data can be found on emulsions of different make and type.The range-energy relation of Agfa K2 emulsions was investigated by LxNIvs [2] and BEBEL [1]. Both authors carried out calculations for protons, and obtained the calibration points by measuring and reducing the range of alpha-particles from the decay series of Th. Experimental data on protons were reported only by LANIus, who measured the range of 0,58 MeV protons from the reaction N 14 (n,p) C 14. Both measurements were made in air of 60~ relative humidity, and the calculations were also made for emulsions of this kind. There is a substantial difference in the atomic composition reported by the two authors and accordingly also in the density of emulsions. According to BEBEL'S recerit data the latter is 3,38 gcm --3 as against the previous 3,84 gcm -3. LANIUS carried out the calculations as described by C•[3], while BEBEL made them with the method developed by VIGNERON [4] using --in addition to the composition of the emulsion --new data also for the average ionization potential value.On the basis of the above it can be expected and also understood that the discrepancy in the range of protons with identical energy is considerably greater between the data of the two authors referred to than the usual error in measurement. The data of measurement and calculated values of both authors --on the other hand --show good agreement. The reason for this, besides the use of emulsions with different stopping power, is to be found in the fact that

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Section: The Errors Indicated In the Figures Ate Statistical Errors Omentioning

confidence: 97%

Section: The Errors Indicated In the Figures Ate Statistical Errors Omentioning

confidence: 99%

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Range of protons in the Agfa K2 nuclear emulsion

Medveczky

Somogyi

1961

Acta Phys. Hung.

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Berechnung und Eichung eines „constant‐sagitta”︁‐Schemas für die Agfa‐ K2‐Kernspuremulsion

Bebel

1960

Annalen der Physik

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Mit 6 Abbildungen InhaltsiibersiehtAuf der Grundlage der Moliereschen Theorie der Coulombvielfachstreuung und einer in I) berechneten Energie-Reichweite-Kurve wird ein , ,constant-sagitta"-Zellenschema zur Massenbestimmung an Spuren einfach geladener Teilchen in der Agfa-K2-Emulsion berechnet. Es werden Eichmesslingen an Protonenspuren mit Reichweiten zwischen 5000 und 12 000 , u durchgefiihrt. Die bezuglich der unelastischen Streuung durch die Atomelektronen korrigierten Erwartungswerte liegen innerhalb des einfachen statistjscheii Fehlers der experimentellen Ergebnisse. Als Nebenresultat ergibt sich ein Hinweis aixf eine Moglichkeit zur Erhohung des Auflosungsvermogens der Methode.

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