Thanks Robin, I see the problem. In this case, both the d and the p
mass I used contains the electron. As a result, the energy change I
calculated is correct because the electron mass cancels out.
Nevertheless, this is not what Jones was claiming, so the value is not
relevant.
Ed
On Mar 15, 2013, at 3:31 PM, [email protected] wrote:
In reply to Edmund Storms's message of Fri, 15 Mar 2013 14:55:45
-0600:
Hi Ed,
[snip]
Robin, that is not my understanding. The values are from GE nuclear
Energy 15 Edition that give the mass of the nucleus. The mass is not
only obtained using a mass spectrometer. It is obtained by IUPAC
using
a complex evaluation based on nuclear decay and energy measurements
as
well. The mass spectrometer can not give the number of significant
figures to which these values are given.
Ed
See http://physics.nist.gov/cgi-bin/cuu/Value?mdu.
(Note that the mass given differs from that which you provided by 1
electron
mass.)
Furthermore, from http://atom.kaeri.re.kr/ton/nuc1.html you will see
that the
binding energy of Deuterium is 2224.573 +- 0.002 keV (i.e. 2.2 MeV).
The binding energy is of course the energy release when the nucleus
is created
from free particles.
Regards,
Robin van Spaandonk
http://rvanspaa.freehostia.com/project.html
Atomic Weights and Isotopic Compositions for Hydrogen
Isotope Relative
Atomic Mass Isotopic
Composition Standard
Atomic Weight Notes
1 H 1 1.007 825 032 07(10) 0.999 885(70) 1.007 94(7)
g,m,r,b,w
D 2 2.014 101 777 8(4) 0.000 115(70)
T 3 3.016 049 2777(25)
