Equation to calculate absorbed dose of radiation?

  • Thread starter Thread starter Littlegirloud
  • Start date Start date
  • Tags Tags
    Radiation
Click For Summary

Homework Help Overview

The discussion revolves around calculating the absorbed dose of radiation for a given mass of tissue based on the energy absorbed. The original poster presents a scenario involving 420 Joules of energy absorbed by 60 grams of tissue.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to apply the formula D = E/M for calculating the absorbed dose and questions whether this is the most appropriate approach. Some participants suggest verifying the mass unit conversion from grams to kilograms, while others explore the implications of this conversion on the final dose calculation.

Discussion Status

Participants are actively engaging in checking the calculations and discussing unit conversions. There is a recognition of the need to ensure consistency in units, particularly regarding the mass of tissue. The conversation reflects a mix of attempts to clarify the correct application of the formula and the implications of unit discrepancies.

Contextual Notes

The original poster confirms the mass of tissue as 60 grams, which raises questions about the necessity of converting this value to kilograms for the calculation of absorbed dose. There is an ongoing exploration of how this affects the final result.

Littlegirloud
Messages
6
Reaction score
0

Homework Statement


Calculate the absorbed dose of radiation for tissue that suffers a mean energy absorbed of 420 Joules in a quantity of tissue that has a mass of 60g.

Homework Equations


This is really my question. No relevant equation is provided in these materials so my independent research (and the data given) suggests I could use D = E/M, but is that the most appropriate?

The Attempt at a Solution


D = E\M
D = 420/60
D = 7
D = 7 J kg-1
 
Physics news on Phys.org
Radiation dose is generally reported in terms of mean energy deposited per unit mass.

You might want to double check the 60 g vs kg though.
 
I've checked again and it is definitely 60 grams. Does that mean I need to equate the tissue dose to kg so it tallies with the final measure?

Perhaps?
D = E\M
D = 420/0.06
D = 7
D = 7000 J kg-1
 
Littlegirloud said:
I've checked again and it is definitely 60 grams. Does that mean I need to equate the tissue dose to kg so it tallies with the final measure?

Perhaps?
D = E\M
D = 420/0.06
D = 7
D = 7000 J kg-1
The final value looks good. I don't know what happened in the second to last line though.
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
1K
Replies
4
Views
2K
  • · Replies 29 ·
Replies
29
Views
4K
Replies
8
Views
2K
  • · Replies 7 ·
Replies
7
Views
4K
Replies
35
Views
6K
  • · Replies 3 ·
Replies
3
Views
2K
Replies
4
Views
5K
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K