| 释义 |
octupole Physics.|ˈɒktuːpəʊl|
Also octa-, octo-.
[f. octu- (in octuple a. (n.), octuplet: cf. quadrupole), octa-, octo- + pole n.2]
A multipole of order l = 3. Freq. attrib. or as adj. Cf. multipole n.
1929P. Debye Polar Molecules ii. 26 The next configuration, constructed by a displacement of the quadrupole in an arbitrary direction, will give the octupole. 1950D. Halliday Introd. Nucl. Physics ii. 57 Gamma-emission processes can be classified as to multipole order; we speak, for example, of dipole, quadrupole, octopole, and still higher-order transitions. 1954Physical Rev. XCIV. 1799 (heading) Hyperfine structure of In115. Evidence of a nuclear octupole moment. 1961A. Abragam Princ. Nucl. Magnetism vi. 170 The existence of magnetic octopoles has been established by atomic beam methods. 1970G. K. Woodgate Elem. Atomic Struct. ix. 166 The only multipole (2k-pole) moments which do not vanish are: magnetic dipole (k = 1), electric quadrupole (k = 2), magnetic octupole (k = 3), electric hexadecapole (k = 4), etc. 1971Nature 27 Aug. 609/1 The magnetic dipole and octapole and electric quadrupole moments all appear to vanish as (Zc + 1)-2 as Zc, the redshift of light coming from the centre of the disk, goes to infinity. |