\documentclass{../signatures}
\labacronym{NMR}
\labtitle{Nuclear Magnetic Resonance}

\begin{document}

\maketitle

\names

\textbf{Suggested reading to start with (see the end of the manual for more):}

\begin{enumerate}
    \item 111B NMR Manual
    \item About Lock-In Amplifiers: Application Note \# 3” \href{https://drive.google.com/file/d/132FYfGLOt9ue8UWSOA31-Mgl27g-ZSIA/view?usp=drive_link}{\textbf{About Lock-ins}}
    \item Bloch, Felix. ``\href{https://experimentationlab.berkeley.edu/sites/default/files/NMR/References/03-Nuclear_Induction.pdf}{\textbf{Nuclear Induction}}''. \emph{Physical Review 70.} 1946. Bloch's two-coil method is used in this experiment.
    \item Yuan, L and Wu, C.S. \href{https://experimentationlab.berkeley.edu/sites/default/files/NMR/References/01-Methods_of_Experimental_Physics.pdf}{\textbf{\emph{Methods of Experimental Physics}}}. Part B, Vol. 5. Academic Press. 1963. pp. 104-123 (Section 2.4.1.4). This reference discusses all the ideas necessary to do the experiment, which uses the two-coil Bloch method.
    \item 111B NMR Experiment Videos \href{http://youtu.be/q\_Rtbr7YEJY}{\textbf{CW NMR}} and \href{http://youtu.be/\_sXDn-ChOUY}{\textbf{Pulsed NMR}}. Note: In order to view the private Youtube videos hosted by the university, you must be signed into your berkeley.edu Google account.
\end{enumerate}

\prelab

\begin{enumerate}

    \item What is nuclear magnetic resonance? What is Larmor precession? What magnetic fields do we apply to our sample and what are their functions
    
    
    \item Referring to \href{http://experimentationlab.berkeley.edu/sites/default/files/NMRHead.png}{NMR Head} of this lab manual, in what directions are the DC field, the modulating (60 Hz) field, and the RF field? What do these fields do? How do these fields relate to question 1? When you arrive in lab, examine how these fields are actually oriented in space. 

    \item How can you tell when you have found the resonance condition in this continuous wave mode? Should there be any symmetry?

    \item Calculate the expected resonance frequencies of the glycerin and manganese samples. 

    \item What are T1 and T2?

    \item What are the working principles of the lock-in amplifier? How is it used to produce a derivative waveform in this lab?

    \item How does pulsed NMR work? How does the setup differ from CW?

    \item What is "free nuclear induction"?

    \item What is a "spin echo"?
       \\[36pt]
\end{enumerate}

\prelabsignatures


\midlab

\begin{enumerate}

    \item On day 2 of this lab, you should have successfully produced an H2O absorption resonance picture, with a calibrated frequency axis. What is the Larmor Frequency in MHz? Show them to a GSI and get a signature.
\\[36pt]
\end{enumerate}

\midlabsignatures{3}

\begin{enumerate}

\item On day 7 of this lab, you should have successfully observed the spin echo on the scope. Show it to an instructor and ask for a signature.
\\[36pt]
\end{enumerate}

\midlabsignatures{7}

\textbf{Other Questions to answer about this experiment as you go along}

\begin{enumerate}

    \item \textbf{Quantum Mechanics and E and M:} Classical absorption and dispersion curves for light going through matter (covered in any 110 text). In the NMR lab you will encounter similar absorption and dispersion curves. Why should optical absorption and dispersion be so similar to NMR absorption and dispersion? [Hint: think of the relevant Hamiltonians!]

    \item \textbf{E and M:} The experiment relies on the induced voltage generated in a "pickup" coil surrounding your sample (in more than one way). Study the sample NMR head apparatus and understand how a magnetization induced in your sample can be "picked up" by the coil (which is basically just an RLC circuit). Does the frequency of the RF field affect the pickup coil's response?
    \\[24pt]

\end{enumerate}

\pagebreak

\checkpointsection 

\begin{enumerate}

\item \checkp{CW Set-Up}

\item \checkp{Glycerin Line Width}

\item \checkp{Mn Sample Traces}

\item \checkp{Setup Pulsed}


\end{enumerate}

\end{document}