Nuclear & Magnetic Interactions (7)

Question 1

What is the nuclear magnetic moment?

Answer 1

Magnetic dipole moment that arises from the circular electric current induced by a nucleus spinning about its axis

Question 2

What is the magnetogyric ratio?

Answer 2

proportionality constant

Question 3

What units are magnetogyric ratio?

Answer 3

rad T^-1 s^-1

Question 4

When is it possible for the magnetogyric ratio to be negative?

Answer 4

dipole and P are antiparallel

Question 5

How do the nuclear dipoles line up when placed in an external magnetic field?

Answer 5

either with it or against it

Question 6

What is the state of higher energy for nuclear spin l = 1/2?

Answer 6

m = -1/2, nuclear dipole opposed to the external applied magnetic field

Question 7

What is the state of lower energy for nuclear spin l = 1/2?

Answer 7

m = +1/2, nuclear dipole aligned with external applied magnetic field

Question 8

What is the state of higher energy for nuclear spin l = 1?

Answer 8

m = -1, nuclear dipole opposed to external applied magnetic field

Question 9

What is the state of lower energy for nuclear spin l = 1?

Answer 9

m = +1, nuclear dipole aligned with external applied magnetic field

Question 10

What is the angle that an l = 1/2 nuclear makes with the z directional axis?

Answer 10

54.7

Question 11

What do you call the angle that an l = 1/2 nuclear makes with the z directional axis?

Answer 11

angle of precession

Question 12

What is the population distribution between the nuclear spin energy states in the absence of an external magnetic field?

Answer 12

identical

Question 13

How is the population of the excited state related to magnetic field strength?

Answer 13

directly and linearly