TAP 525- 4: A binding energy calculator
This model removes the drudgery from the calculation of binding energies. There are three
sheets. Sheet 1 does the calculations.
4
4 The calculator
numbers masses /
amu
electrons
5
0.0025
protons
5
5.0365
neutrons
7
7.0609
constitutents total
energy /
J
12.0999
quoted mass of isotope
11.00931
difference in mass
-1.09059
energy released
-1.63E-10
Sheet 2 holds the common data – masses for neutrons, protons, electrons, the value of one
atomic mass unit in kilograms and the speed of light
Masses of particles
name
symbol
mass /
unified
atomic
electron
0
-1e
0.0005
proton
1
1p
1.0073
neutron
1
0n
1.0087
Constants
Speed of light
1 amu
c
3.00E+08 m/s
1.67E-27 kg
Sheet 3 holds a sample of isotope data.
Element
H
He
Li
Be
Be
C
N
O
F
Ne
Na
Mg
Al
Si
P
Si
Cl
Ar
K
Ca
Sc
Ti
V
Cr
Mn
Fe
Ni
Co
Cu
Zn
Ga
Ge
As
Br
Se
Kr
Rb
Sr
Y
Zr
Nb
Mo
Ru
Rh
Pd
Ag
Cd
In
Sn
Sb
In
Te
Xe
Cs
Ba
La
Ce
Pr
Nd
Z
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28
27
29
30
31
32
33
35
34
36
37
38
39
40
41
42
44
45
46
47
48
49
50
51
53
52
54
55
56
57
58
59
60
1
4
7
9
11
12
14
16
19
20
23
24
27
28
31
32
35
38
39
40
45
47
51
52
55
56
58
59
63
64
69
74
75
79
80
82
85
88
89
90
93
98
102
103
106
107
114
115
118
121
127
130
132
133
138
139
140
141
142
Mass / amu
1.00783
4.00260
7.01600
9.01218
11.00931
12.00000
14.00307
15.99491
18.99840
19.99244
22.98980
23.98504
26.98153
27.97693
30.97376
31.97207
34.96885
37.96272
38.96371
39.96259
44.95592
46.95180
50.94400
51.94050
54.93810
55.93490
57.93530
58.93320
62.92980
63.92910
68.92570
73.92190
74.92160
78.91830
79.91650
81.91350
84.91170
87.90560
88.90540
89.90430
92.90600
97.90550
101.90370
102.90480
105.90320
106.90509
113.90360
114.90410
117.90180
120.90380
126.90040
129.90670
131.90420
132.90510
137.90500
138.90610
139.90530
140.90740
141.90750
What to do:
Enter the values for the chosen isotope into the pale yellow boxes in sheet 1, following the
tips in the comment boxes, and the binding energy is calculated and displayed in the pale
blue box.
You will need to double click on the boxes and have a computer running Excel
Practical advice
This is provided as a constructed calculator, together with some useful data.
External reference
This activity is taken from Advancing Physics chapter 18, File 30T