HW6: Physics 124 (Winter 2017)
(due Thursday March 2, 2017)
1. In the e+ e collisions, assuming the center-of-mass energy is
as defined below
s, please calculate the value of R
(e+ e hadrons)
,
(1)
(e+ e + )
plot your calculated R as a function of s. What

Quiz 2: Physics 124 (Winter 2017)
(in class Tuesday January 31, 2017)
1. In the shell model, for the state 2p, what are radial and orbital quantum numbers (n, `)? Please
choose
(a) (1, 0)
(b) (2, 1)
(c) (2, 0)
(d) (2, 2)
2. How many nucleons does this sta

The cross section and impact parameter
in Rutherford scattering
Quiz : Friday , January 15, 2016
Some Information
There is a long-range repulsive Coulomb force between
reacting nuclei
For Rutherford scattering both projectile and target emerge
from the

Lecture 2
Physics 124
Winter 2016
Reading assignment for this lecture :
Page xii, and sections 1.1, 1.2, 2.1
Textbook: An Introduction to Nuclear Physics by
W. N. Cottingham and D. A. Greenwood
Todays Lecture
Natural Units
Mass-energy
Constants of Natu

Nuclear Size and Shape
Lecture 4
PHY-124
Homework #1 is due today.
Homework #2 (due Wed, Jan 20th) will be
posted on the web this afternoon.
Reading assignment for this lecture :
Sections 4.1, 4.2, 4.3
The scattering of by nuclei
Nuclear Size Rutherfords

Physics 124 Lecture 3
Winter 2016
Reading assignment for this lecture :
Sections 2.2, 2.4, 2.6,3.1, 3.2, 3.5
Fundamental Interactions
There are four conventionally accepted
fundamental interactions1. Gravitational
2. Electromagnetic
3. Strong
4. Weak
Forc

Nuclear Size from Muon interactions
Next Monday, January 18 : Martin Luther King, Jr, holiday
Homework # 2 submission deadline : Wednesday , January 20
Nuclear Size from Muon interactions
The negative muon is another leptonic probe of nuclear charge.
m

HW4: Physics 124 (Winter 2017)
(due Thursday February 9, 2017)
1. If a single nuclide can decay by two processes, with decay constant 1 and 2 , respectively, we
will have
dN
= 1 N + 2 N .
dt
(1)
(a) The total decay constant tot is defined through N = N0 e

HW2: Physics 124 (Winter 2017)
(due Thursday January 26, 2017)
1. For any given spatial distribution (~r), one can define the form factor of a target in terms of its
Fourier transform F (q 2 ) in momentum transfer q, as given
Z
i
2
F (q ) = d3~r (~r) e h

HW8: Physics 124 (Winter 2017)
(due Thursday March 16, 2017)
1. In the natural unit, we have h = c = 1.
(a) In such a unit system, please express 1 MeV in terms of fm.
(b) In the lecture, we derived the bag pressure B 1/4 = 206 MeV. Please write B in term

HW5: Physics 124 (Winter 2017)
(due Thursday February 23, 2017)
1. Assuming we have a proton beam moving with four-momentum p1 = (E1 /c, p~1 ) and p~1 along
+z direction, and an anti-proton beam with four momentum p2 = (E2 /c, p~2 ) and p~2 along z
direct

HW1: Physics 124 (Winter 2017)
(due Thursday January 19, 2017)
1. In the standard SI units, the electric constant 0 = 8.854 1012 s2 C2 m3 kg1 . In
the rationalized system of SI units, one sets 0 = 1. Express the proton electric charge e =
1.6021019 C in t

HW3: Physics 124 (Winter 2017)
(due Thursday February 2, 2017)
1. In the Fermi gas model, please
(a) derive the average kinetic energy per nucleon hEkin i, first write your result in terms of Fermi
momentum PF , and then re-express your result in terms of

Quiz (bonus): Physics 124 (Winter 2017)
(in class Thursday February 9, 2017)
1. Radioactive 36 Cl has a half-life 3 105 years. Please calculate its mean life. Express your results
in seconds.
1