Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Textbook Question
Chapter 46, Problem 2PLA
What is the exact statistical distribution function that describes the statistics of nuclear counting experiments?
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A radioactive sample is monitored with a radiation detector which registers 11360 counts per minute. Twelve hours later, the detector reads 1420 counts per minute.
Calculate the decay constant ?(lamda) of the sample.
lamda = ? s^-1
A radioactive sample is monitored with a radiation detector to produce 7640 counts per minute. Twelve hours later, the detector reads 1410 counts per minute.
1) Calculate the decay constant of the sample. (Express your answer to two significant figures.)
2) Calculate the half-life of the sample. (Express your answer to two significant figures.)
The counting rate from a radioactive source is 4000 counts per second at time t=0. After 10 seconds, the counting rate is 1000 counts per second.
a)What is the half-life?
b)What is the counting rate after 20 seconds?
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- What time interval elapses while 90.0% of the radioactivity of a sample of 3372As disappears as measured by its activity? The half-life of 3372As is 26 h.arrow_forwardCalculate the dose in Sv to the chest at a patient given an xray under the following conditions. The xray beam intensity is 1.50 W/m2, the area of the chest exposed is 0.0750 m2 35.0% of the xrays are absorbed in 20.0 kg of tissue, and the exposure time is 0.250 s.arrow_forwardWhat is the dose in mSv for: (a) a 0.1 Gy xray? (b) 2.5 mGy of neutron exposure to the eye? (c) 1.5 mGy of exposure?arrow_forward
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