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How should countries decide what to trade?

The United States produces many different products. What should it export, and what should it import?

Complete the following statements: The FWHM is a measure of the [answer1] of a scintillation detector. When the FWHM is used to compare two scintillation detectors, a [answer2] (larger or smaller) value indicates a [answer3] (better or worse) detector.   

Explain the principles of energy determination in energy-sensitive detectors, by answering the following questions: What transformations must occur in the scintillation crystal and photomultiplier tube in order to convert a gamma ray into an electronic signal?   What factors affect the photomultiplier tube and signal strength? How does this series of transformations relate to the determination of gamma ray energy? What factors of a scintillation detector defines the broadness of the peaks seen on scintillation detector energy spectra? 

(Extra credit: up to 6 points) What is the purpose of the chi-square test and what information does it provide us about the performance of the scintillation detector?

After calibration of the multi-channel analyzer, what is the ideal relationship between the Cs-137 photopeak and the energy window? (Hint: consider the energy spectrum)

Define precision, define accuracy, and compare the two. You may include a drawing to demonstrate your understanding. 

Define scintillator and use one example from the lab exercises completed in class.

Identify the correct photopeak: The photopeak that occurs 28 keV below the primary photopeak is called the [photopeak1] The region that corresponds with the area of scattered gamma rays across a variety of angles, including events that are not absorbed in the crystal are called [photopeak2] The region that corresponds with the photopeak that results from internal conversion electrons and their resulting emission are called [photopeak3] The photopeak that occurs when a gamma ray transfers its energy into a scintillation crystal is called the [photopeak4]

A client with a sodium level of 122 mEq/L is confused and lethargic. What is the nurse’s priority action?