@@ -20,7 +20,7 @@ Because we sum over all lattice points, each argument has a different phase. Sum
...
@@ -20,7 +20,7 @@ Because we sum over all lattice points, each argument has a different phase. Sum
4. No, there is a single atom, and thus only one term in the structure factor. Therefore the structure factor is non-zero.
4. No, there is a single atom, and thus only one term in the structure factor. Therefore the structure factor is non-zero.
5. No, an increase of the unit cell size cannot create new diffraction peaks (see lecture). Even though the increase leads to extra reciprocal lattice points, the structure factor will cancel their contributions to the scattered wave amplitudes.
5. No, an increase of the unit cell size cannot create new diffraction peaks (see lecture). Even though the increase leads to extra reciprocal lattice points, the structure factor will cancel their contributions to the scattered wave amplitudes.
## Exercise 2*. The reciprocal lattice of the bcc lattice
## Exercise 1*. The reciprocal lattice of the bcc lattice
1. A possible set of BCC primitive lattice vectors is:
1. A possible set of BCC primitive lattice vectors is:
