Excitation function

Excitation function

Excitation function is a term used in nuclear physics to describe a graphical plot of the yield of a radionuclide as a function of the bombarding projectile energy or the calculated excitation energy of the compound nucleus.

A curve is typically parabolic in shape. Mathematically, it is described as a Breit-Wigner function, resembling a Gaussian bell curve.

A nuclear reaction should be described by a complete study of the exit channel (1n,2n,3n etc) excitation functions in order to allow a determination of the optimum energy to be used to maximise the yield.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • excitation function — sužadinimo funkcija statusas T sritis fizika atitikmenys: angl. excitation function vok. Anregungsfunktion, f rus. функция возбуждения, f pranc. fonction d’excitation, f …   Fizikos terminų žodynas

  • excitation function — noun The relationship between the energy of an electron and its ability to excite an atom to a particular excited state …   Wiktionary

  • Excitation-contraction coupling — Excitation contraction (EC) coupling is a term coined in 1952 to describe the physiological process of converting an electrical stimulus to a mechanical response [1]. This process is fundamental to muscle physiology, whereby the electrical… …   Wikipedia

  • Excitation (magnetic) — An electric generator or electric motor that uses field coils rather than permanent magnets will require a current flow to be present in the field coils for the device to be able to work. If the field coils are not powered, the rotor in a… …   Wikipedia

  • fonction d’excitation — sužadinimo funkcija statusas T sritis fizika atitikmenys: angl. excitation function vok. Anregungsfunktion, f rus. функция возбуждения, f pranc. fonction d’excitation, f …   Fizikos terminų žodynas

  • Wannier function — The Wannier functions are a complete set of orthogonal functions used in solid state physics. They were introduced by Gregory Wannier. [http://dx.doi.org/10.1103/PhysRev.52.191 The structure of electronic excitation levels in insulating crystals …   Wikipedia

  • Work function — In solid state physics, the work function is the minimum energy (usually measured in electron volts) needed to remove an electron from a solid to a point immediately outside the solid surface (or energy needed to move an electron from the Fermi… …   Wikipedia

  • Zeta function regularization — In mathematics and theoretical physics, zeta function regularization is a type of regularization or summability method that assigns finite values to superficially divergent sums. The technique is now commonly applied to problems in physics, but… …   Wikipedia

  • Planetary nebula luminosity function — (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III| [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population… …   Wikipedia

  • Isotopes of dubnium — Dubnium (Db) is an artificial element, and thus a standard atomic mass cannot be given. Like all artificial elements, it has no stable isotopes. The first isotope to be synthesized was 261Db in 1968. There are 12 known radioisotopes from 256Db to …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”