Thimble chamber walls-calibration of an ionization chamber

Assignment Help Other Subject
Reference no: EM13299666

1. Ionization chambers if not sealed require their readings to be corrected for temperature and pressure because:

A. Walls of the chamber expand and shrink with temperature

B. The collecting electrodes electrical conductivity changes

C. The volume of the air changes

D. Mass of the air in the chamber changes

2. Thimble chambers are used to calibrate radiation beams because:

A. These are sturdy

B. They have good spatial resolution

C. They do not significantly perturb the beams

D. All of the above

3. Thimble chamber walls:

A. Are made from high Z atomic number material

B. Need be very thick

C. Are air-equivalent

D. Are made of ferromagnetic material

4. Parallel-plate ionization chambers are primarily used to measure:

A. Ionization at deeper locations in a phantom

B. Surface dose

C. Scattered radiation dose

D. Interstitial dose

5. Which of the following is not a desirable characteristic of an ionization chamber:

A. Energy independence

B. High signal to noise ratio

C. Change in sensitivity with the direction of the incident beam

D. Reproducibility

6. Calibration of an ionization chamber means it has been:

A. Exposed to radiation to stabilize

B. Compared against a national standard to establish a correction factor

C. Tested against leakage and electrical shorts

D. Made waterproof

7. An electrometer is an instrument used to measure:

A. Charge, current

B. Voltage, resistance

C. Capacitance

D. AIl of the above.

Reference no: EM13299666

Questions Cloud

Calculate the residual for the data point : One pair of data in this sample is (2,5). That is to say HT of 2 inches has 5 INQ. Calculate the residual for the data point, i.e., calculate the difference between the observed inquiries and the predicted inquiries.
Previous administrations and education department officials : Previous administrations and education department officials attest to the fact that a big number of licensed teachers are working abroad as domestics. In 1998, for instance, then President Fidel Ramos launched a program to lure back teachers who had ..
Primary muscle involed performing leg extension exercise : What are the primary muscle(s) involved when performing a leg extension exercise? Which of these statements is NOT true of strength training for women? Which of the following sequences would best represent a typical schedule for a serious weight trai..
Considered offers and not invitations to offer for businesse : Discuss what problems could arise if advertisements were considered offers and not invitations to offer for businesses - give examples and be specific. Do you think this is a good thing or a bad thing?
Thimble chamber walls-calibration of an ionization chamber : Calibration of an ionization chamber means it has been: Ionization chambers if not sealed require their readings to be corrected for temperature and pressure because: Thimble chamber walls:
test the null hypothesis HO : Suppose that we wish to test the null hypothesis H0 that the proportion p of ledger sheets with errors is equal to .05 versus the alternative Ha , that the proportion is larger than .05, by using the following scheme.
Pursue carrer in imaging-treatement and dignostic technology : Why have you decided to pursue a carrer in imaging, treatement and dignostic technology and what sources of carrer information did you study to make your decision?
Which are used to treat heart failure : Which are not a treatment for stroke? Which are used to treat heart failure?
Why do you think entrepreneurs need to be good marketers : why do you think entrepreneurs need to be good marketers

Reviews

Write a Review

 

Other Subject Questions & Answers

  Limits of confidentiality as required by illinois laws

Describe the limits of confidentiality as required by Illinois laws. How do these compare to the requirements of the APA ethics code?

  Development of a group intervention for teens

Adolescents with Type 1 diabetes (DM1) are at significant risk for depression compared to their non-diabetic counterparts and frequently demonstrate poor glycemic control

  Honors and approaches most aspects of life

DeShawn graduated from college with honors and approaches most aspects of life with the expectation that he will be successful. He expects a great deal of himself and sets his goals high.

  Examples of internal and external customers

What is the definition of a customer? What are some examples of internal and external customers? Is the measurement of customer satisfaction different for internal customers than for external customers?

  Besides money are negotiable in a job interview

What things, besides money, are negotiable in a job interview? What would be the advantages of using alternative negotiable items? Explain.

  Why do we even need a modifier

“Why do we even need a modifier? Can’t we just code the main procedure performed and not worry about adding in extra details?” Why or why not?

  Discuss motivations of american patriots in establishing

Discuss the motivations of the American patriots in establishing this nation, from the Revolutionary War to the framing of the Constitution and Bill of Rights, to the formation of the first political party system. Were the founders of our republi..

  Blue by gershwin for my music class

I have to write a final paper analysing Rhapsody in Blue by Gershwin for my music class. Where can i get the description about this work ?

  Existence of a chiefdom society

Which of the following is most likely to be interpreted by an archaeologist as evidence for the existence of a chiefdom society?

  Implement the changes gradually

Managers should make changes only when they are absolutely necessary, should announce them well in advance, and should implement the changes gradually.

  Threats to validity

Review the internal and external threats to validity. Identify and define those threats that are related to measurement, and the threats that are related to sampling issues.

  What are the six steps to corporate identity management

Please review Case Study 4-1 on JetBlue Airways: Regaining Altitude. What are the six steps to corporate identity management (branding)? Do you think that JetBlue followed all six steps to corporate identity management (branding)? Explain your decisi..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd