![]() | This redirect does not require a rating on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||
|
Though I've tried to improve what's written, the model described for charge and density deistribution still seems quite inadeqate. According to the writer's user page, it seems to me like OR. Moreover, the proton number Z is not proportional to the nucleus area (roughly A^(2/3)) even for large A. Rather, the well known Semi-empirical mass formula gives much better results. I suggest deleting these sections, mainly becuase it seems like OR, unless appropriate citing is given. And by this I DO NOT mean the My Flatley's coming paper. Dan Gluck 20:59, 25 June 2007 (UTC)
Figure: The simple cube model explains the approximate nuclear radius connection
r = r0A1/3
A is the
number of ”basic nuclide individuals”, corresponding to
the nuclear mass number, r0 is the radius of the A=1 nuclide, and
r is the
general nuclide radius for any given A.
The figure shows the squares in the mass cubes which are formed if one adds them successively as ”single
individual water drops” 1K, 2K, 3K, . . . AK. The A=1 individual marks ”the basic atomic nucleus”, where all
AK nuclei hence receive one and the same compact ”water density” when added together. A hence
corresponds to the mass number. The figure shows the cubic squares for A from 1 to 250 in steps of 50
beginning from the unit A=1 individual with cubic or square side r = r0. The connection and
deduction then simply becomes
AK/K = (Ar03)/r03 = A =
(A1/3r0)3/r03 =
(r/r0)3
That is, already from the resulting form in the second last part;
r = r0A1/3 ......................... the cube graph
which is the approximated (spherical) form for the atomic nucleus; r0 is the neutron or proton radius, roughly 1.3 Fermi (ref. SCIENTIFIC AMERICAN August 1987, Collisions between Spinning Protons). The A1/3-form has also been reported ”a good approximation” from experimental investigations (see already mentioned McGraw-Hill source above). The A1/3-form is also included in several theoretical nuclear physics mass-energy models as f.ex. the Weizäcker equation (also mentioned in the already mentioned McGraw-Hill source).
I've long ago deleted the OR part, and of course the article now is not OR, it is even trivial. Dan Gluck 06:32, 16 September 2007 (UTC)
![]() | This redirect does not require a rating on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||
|
Though I've tried to improve what's written, the model described for charge and density deistribution still seems quite inadeqate. According to the writer's user page, it seems to me like OR. Moreover, the proton number Z is not proportional to the nucleus area (roughly A^(2/3)) even for large A. Rather, the well known Semi-empirical mass formula gives much better results. I suggest deleting these sections, mainly becuase it seems like OR, unless appropriate citing is given. And by this I DO NOT mean the My Flatley's coming paper. Dan Gluck 20:59, 25 June 2007 (UTC)
Figure: The simple cube model explains the approximate nuclear radius connection
r = r0A1/3
A is the
number of ”basic nuclide individuals”, corresponding to
the nuclear mass number, r0 is the radius of the A=1 nuclide, and
r is the
general nuclide radius for any given A.
The figure shows the squares in the mass cubes which are formed if one adds them successively as ”single
individual water drops” 1K, 2K, 3K, . . . AK. The A=1 individual marks ”the basic atomic nucleus”, where all
AK nuclei hence receive one and the same compact ”water density” when added together. A hence
corresponds to the mass number. The figure shows the cubic squares for A from 1 to 250 in steps of 50
beginning from the unit A=1 individual with cubic or square side r = r0. The connection and
deduction then simply becomes
AK/K = (Ar03)/r03 = A =
(A1/3r0)3/r03 =
(r/r0)3
That is, already from the resulting form in the second last part;
r = r0A1/3 ......................... the cube graph
which is the approximated (spherical) form for the atomic nucleus; r0 is the neutron or proton radius, roughly 1.3 Fermi (ref. SCIENTIFIC AMERICAN August 1987, Collisions between Spinning Protons). The A1/3-form has also been reported ”a good approximation” from experimental investigations (see already mentioned McGraw-Hill source above). The A1/3-form is also included in several theoretical nuclear physics mass-energy models as f.ex. the Weizäcker equation (also mentioned in the already mentioned McGraw-Hill source).
I've long ago deleted the OR part, and of course the article now is not OR, it is even trivial. Dan Gluck 06:32, 16 September 2007 (UTC)