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Ionizing radiation: mathematical functions and shielding

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Ionizing radiation: mathematical functions and shielding er en at-opgave, afleveret til karakteren 10. Fylder 6 sider (1.663 ord, ca. 7 min. læsning) og blev publiceret 26. marts 2013.

Denne AT-rapport undersøger, hvilke matematiske funktioner der er velegnede til at beskrive forskellige aspekter af ioniserende stråling. Opgaven fokuserer på rækkevidden af alfa-, beta- og gammastråling samt matematiske beskrivelser og beregninger for afskærmning med bly. Eksperimenter med GM-tæller og blyplader udføres for at bestemme halveringstykkelsen for gammastråling.

Redaktørens vurdering
10 Fortrinlig
Solid AT-rapport med klar problemformulering, eksperimentel metode, beregninger og konklusion. Giver god indsigt i ioniserende stråling og afskærmning.
Struktur
12
Faglig dybde
10
Kilder
7
Fuldstændighed
10
  • alpha radiation
  • beta radiation
  • exponential decay
  • gamma radiation
  • geiger-müller tube
  • ionizing radiation
  • mathematical models
  • physics
  • radiation shielding
  • radioactivity

Main problem: Which mathematical functions are well suited to describe different aspects of ionizing radiation?- Geometric calculation and linear equations are well suited to handle ionizing radiation.

Y=b*ax

Sub problems:How are the ranges of the three kinds of radioactive radiation different?- Alfa has a very short range, that gets blocked by paper- Beta has a bit longer range than Alfa, and it can be blocked by a 3mm aluminum plate.- Gamma has a very long range and it takes a lot to stop the waves the gamma source radiates

How can the range of values for gamma radiation in lead be described mathematically?- 6,556mm of lead half’s the radiation level of Gamma radiation

How can this description be used in calculations concerning shielding from harmful radiation?- ½ =6,556mm

How does the intensity of radiation from a radioactive source decrease as the distance between the source and the detector increases?- The radioactivity level decreases as the distance increases because, as the distance gets larger the nucleons spreads over a larger area. This means that the chances of them going in to the GM tube.

The Range of Radioactive Radiation

Introduction:

Radicals are atoms, molecules, or ions with unpaired electrons or an open shell configuration. Free radicals may have positive, negative, or zero charge. With some exceptions, these unpaired electrons cause radicals to be highly chemically reactive.

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