Hava ortamında elektronların menzillerinin incelenmesi

Çalışmada hava ortamında, elektronun bir E enerjisinden bir $E_{min}$ enerjisine yavaşlamasında ortalama etkileşme sayısı toplam ortalama yol uzunluğu ve izdüşüm menzili kesikli yavaşlama modeli olarak adlandırdığımız bir yöntemle elde edilmiştir. Bir ortama giren elektronun herbir ortalama serbest yol sonunda yaptığı etkileşmede saçılma açısının kosinüsünün ortalaması hesaplanmış ve buradan elektronların izdüşüm menzili elde edilmiştir. Ayrıca elde edilen izdüşüm menzilin , $R_{csda}$ menziline bağlı değişimine analitik bir ifade önerilmiştir. Elde edilen menzil değerleri literatürde verilen değerler ile karşılaştırılmıştır

The investigation of the ranges of electrons in air medium

In this study, average collision number, total average path length and projected range were obtained with a method called discontinuous slowing down model in slowing down of electron from an energy E to an energy $E_{min}$. In interaction of an electron that comes a medium at the end of each the mean free path , the average of cosine of scattered angles was calculated and from this the projected range of electrons were obtained. An analytic expression was proposed for the change of the ratio of obtained projected range and $R_{csda}$ range versus energy.The obtained range values were compered with values in literature.

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Berger, M.J. and S.M, Seltzer, (1982). National Breau of Standarts, Report No.NBSIR82-2550 -A -
Cengiz A., C. Özmutlu,(1994). Range distribution of electrons. Nucl.Inst. and Metli. B84.North- I-Iolland. 310-318
Dalaney, F. G, E. C, Finch, (1992). Radiation Detectors. Clarendon Press. Oxford. :17-51
Liljequist, D, (1978).Simplified Models for the Monte Carlo Simulation of Energy Distributions of keV Electrons transmitted or Back-Scattered in Various Solids,.Phys.D:Appl.Phsy. 11.839
Özmutlu, C, E. N. Özmutlu, (1991). Determination of distribution of beta particles by means of Monte Carlo simulation method. Doğa-Tr.J.of Physics 15.455-461
Pal, P.B, Varslmey, V.P, Gupta, D.K,(1987). Approximate expressions for continuous slowing down approximation ranges of high energy electrons and positrons. Nucl.Instr.and Meth.B21,14-19
Price, J. W,(1964).Nuclear radiation Detection. McGraw-FIill, New York:7- 20
Weast, R. C. (1985) CRC Handbook of Chemistry and Physics,(CRC Press, Inc,Boca Raton, Florida, E64.
Evans, R. D. (1955) The Atomic Nucleus, (McGraw-Hill, New York, p.600
Seltzer, S.M,M. J.Berger, (1982). Evaluation of the collision stopping Power of elements and compounds for electrons and positrons. Int. J.Appl. Radiat. Isot. 33.1189-1218
Spalek A, (1982).Energy and Angular Distributions of Electrons Emitted from Spectrometer: Monte Carlo Calculations,Nucl.Inst. and Meth. 198.399
Tabata.T, A, Pedro., S, Kunihiko, I, Rinsuke,(1996). Range distributions and projected ranges of 0.1 -to 100- MeV electrons in elemental absorbers.Nucl.Inst. and Metli. B108. 11-17
Ünak, T.(1987).A practical method for calculation of the linear energy transfers and ranges of low-energy electrons in different chemical systems. Nucl.Inst. and Meth .In Physics Research A 255.274-280