Nuclear Physics |

**In General**
> s.a. constants; symmetry.

* __History__: 1939, Lise
Meitner and her nephew Otto Frisch, during a Christmas-Eve walk, come up
with the idea of nuclear fission (the term was taken from cell biology)
while discussing results by Otto Hahn and Fritz Strassmann in Berlin;
1949, Nuclear shell model proposed; 1950s, First clear idea of
neutrons and protons in nuclei; 2002, Traditional nuclear physics is
"dying" (work is now around engineering applications), and the
excitement in the field has moved toward its marriage with astrophysics
and understanding of nucleosynthesis in the early universe and in stars,
the motivation behind the push for building the RIA (rare-isotope
accelerator); 2010, We are entering an era of "nuclear renaissance"
motivated by the diminishing supply and increasing cost of fossil fuels and
their negative impact on the environment; Nuclear power is seen as an affordable
energy source that does not emit CO_{2}, and
a new theoretical focus is needed on studies of the materials involved in
nuclear energy generation and on fission processes.

* __Models / calculations__: The
oldest model, still fundamentally fine but in practice difficult to calculate
with, is the shell model; It can be used, starting with a mean-field
approximation with corrections, up to *A* = 60; Beyond that, use a
deformed basis, and apply "angular momentum projection" numerically.

* __Current view__: The nuclear
forces acting between protons and neutrons that are responsible for the nuclear
binding are residual color forces, much like the van der Waals forces between
neutral molecules.

* __Magic numbers__: The nuclear
shell model explains that nuclei with certain magic numbers (2, 8, 20, 28,
50, 82 and 126) of neutrons and/or protons are especially stable because the
neutrons and/or protons form closed shells; Nuclei that contain magic numbers
of both protons and neutrons (e.g., nickel-78 and tin-132) are even more stable
and are said to be "doubly magic".

* __Half-lives__:
^{14}C, 5.730 yr;
^{214}Po, ~ 10^{−4} s;
^{239}Pt, 24,000 yr.

**In Astrophysics and Cosmology**
> s.a. astrophysics [nucleosynthesis]; early-universe
nucleosynthesis; neutron stars [equation of state].

@ __Books__: Basdevant et al 05 [intro];
Thompson & Nunes 09;
Schmitt LNP(10)-a1001 [dense nuclear/quark matter].

@ __Related topics__:
Viola & Kwiatkowski AS(98)sep [boiling nuclei];
Metcalfe ASP-ap/00 [white dwarves];
Mayer & Truran PRP(00) [nucleocosmochronology];
Sheldon CP(08);
Wiescher Phy(09) [experimental techniques];
Watanabe et al PRL(09) ["nuclear pasta" in supernovae];
Rueda et al NPA(11)-a1104 [nuclear matter in equilibrium in general relativity];
Fischbach et al a1106-conf,
Jenkins et al a1106-conf
[time-varying nuclear decay rates, possibilities and implications];
Carson et al a1812 [nuclear matter properties from GW170817].

**Other Effects and Special Topics**
> s.a. diffraction; nuclear technology
[nuclear power, fusion, NMR/MRI, weapons]; radiation [Mössbauer effect].

* __Isotopes__: Deuterium
was discovered in 1932 using the isotope effect in atomic spectroscopy;
> s.a. atomic physics.

@ __Radioactivity__: Gelletly PW(96)mar [history, applications];
Halliday CP(97) [Earth history];
Tuniz 12;
Brown TPT(14) [dating];
> s.a. elements; quantum effects [exponential decay].

@ __Radiation, other__: Jaworowski PT(99)sep [civilian protection];
Coursey & Nath PT(00)apr [radionuclide therapy].

@ __Fission__:
Rykaczewski Phy(10) [solving a long-standing discrepancy];
news usn(10)dec [asymmetric fission of Hg].

@ __Particle physics__: Klapdor-Kleingrothaus IJMPD(04) [double-beta decay].

**References**

@ __Books__: Fermi 50;
Lim 00 [problems, and atomic];
Cottingham & Greenwood 01 [II];
Mackintosh et al 01;
Walecka 04 [III];
Heyde 04 [II/III];
Yang & Hamilton 10
+ problems 10 [and atomic physics];
Henley & Ellis ed-13 [and particle physics];
Kamal 14;
Donnelly et al 17 [and particle physics].

@ __Books, II / III, with particle physics__: Das & Ferbel 03;
Henley & García 07;
Martin 09;
D'Auria 19.

@ __General references__: Bertsch AJP(04)aug [RL].

@ __History__: Mladjenović 92 [1896–1931],
98
[1932–1960; r PT(99)may];
Kragh a1202-talk
[Rutherford, radioactivity, and the atomic nucleus];
Reader & Clark PT(13)mar [1932, a watershed year];
Pearson PT(15)jun [discovery of fission];
Broglia a1603 [40 years since 1975 Nobel prize];
> s.a. history of physics.

@ __Equation of state__: Baldo & Shaban NPB(08) [dependence on two-body and three-body forces];
Maruyama et al PTPS(10)-a1009 [at phase transitions].

@ __Nuclear models__:
Caurier et al RMP(05) [shell model];
news pn(07)oct
["liquid drop" model and "nuclear syrup"];
Rowe & Wood 10 [foundational nuclear models,
r CP(12)];
Rowe 10 [collective structure models];
Dean & Hamilton AJP(11)jan [shell model].

@ __Other theory__: Zhao et al PRP(04) [as many-body system with random 2-body interactions];
Dean PT(07)nov [comprehensive description];
Epelbaum et al RMP(09),
Otsuka et al PRL(10)
+ Schiffer Phy(10) [forces].

@ __Experiments__: Austin & Bertsch SA(95)jun [halos from excess *n* or *p*];
news pt(10)aug [doubly-magic nuclei and tests of shell models and astrophysical processes];
news nat(10)aug [experimental results challenge theory];
news Sci(12)mar [thickness of "neutron skin"];
Krieger et al PRL(12)
+ news PhysOrg(12)apr [shell model for beryllium isotopes invalidated];
Tarbert et al PRL(14) [the outer, neutron-dominated layer of a nucleus is soft and wispy];
Ahn et al PRL(19) [neutron dripline extended to F and Ne].

@ __Related topics__:
Herndon phy/05 [natural reactors, teaching];
Bertulani a0908-en [nuclear reactions].

> __Online resources__: Internet Encyclopedia of Science
pages.

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send feedback and suggestions to bombelli at olemiss.edu – modified 11 jan 2020