Recent content by adamworth

Hi, yes I've done that, I need to know what values of WT to use. But actually you said I don't need to use WT as I used a coefficient. I will send you my answer by pm.

Homework Statement Question attached. I want to check what values of WT I should use. Homework Equations Effective dose = WT*WR*WT,R The Attempt at a Solution For the neutron whole-body dose I have WT = 1. For the ingested 90Sr and 131I, I also have WT = 1. Are these correct or does...

Ok thanks for the help. Is there any particular resource where you can compare electron and proton energies for a given speed?

So you believe the proton will penetrate deeper? How do I explain this in terms of the Bethe-Bloch formula?

I'm trying to finish an assignment which is to help me in my exam, but I am very stuck on three questions. If I find out how to answer question 7, will I be able to answer 8 and 9? I really need a good resource. Quesitons attached below.

I would like your help if possible. I haven't covered this material. I have been recommended the following book, do you know if it will cover this material? Radiation Detection and Measurement (3rd Edition) Glenn F Knoll (Wiley) Thanks

Homework Statement I have data for the count rate (of gamma rays) against the thickness of various materials (Al, Pb, Fe etc...). I want to work out the linear attenuation coefficient. Can I do this by plotting the natural log of count rate against thickness? I don't have values for...

I've attached the question below. I think it means electrons of a few MeV. My reasoning is that Bremsstrahlung doesn't have much of an effect at a few MeV, so both the electron and proton will penetrate the same distance. But I'm not sure...

Homework Statement Which, of an electron and a proton (of a few Mev), is more likely to penetrate further into matter if they both have: a) The same energy b) The same speed Homework Equations Bethe-Bloch formula. Total stopping power = collision loss + radiation loss (de/dx)t = (de/dx)c +...

Thanks for the reply. Could you give me some tips on how to answer this question please?

Homework Statement I have attached the question below. Homework Equations I'm not sure how to answer the question. The Attempt at a Solution [/B] I started by calculating the specific dose rates for each isotope, but I cannot get any data for 90Sr using...

Right so 6.00000E-01 cm2g-1 x 11.34 gcm-3 gives ~ 1.4 cm-1 for u. When I put all of this into my formula I get 28.98cm which is apporoximately 30cm. I'm satisfied that this is the correct answer unless anyone thinks my value of u is incorrect?

For 6.62x10-1 the closest value is 6.00000E-01, which gives a reading of 1.248E-01 for u/p. Not sure what to do now.

How do I take a reading for a value of u (in cm) for 662 kev from this data? https://physics.nist.gov/PhysRefData/XrayMassCoef/ElemTab/z82.html

Could you tell me the website / book which gives the specific dose rate (84sv/h/GBq). Thank you