| 释义 |
K(-)meson Nuclear Physics.
Also (rare) k meson.
[f. K (in K-particle) + meson3.]
= kaon.
1954Phil. Mag. XLV. 1219 The mass of the K-meson, measured by ionization-range is 970 {pm}100 me. 1954Physical Rev. XCIV. 1794/2 All the K mesons observed lived at least 2 × 10—9 sec before coming to rest in the emulsion. 1964Listener 30 Apr. 711/1 Usually the beams consist of particles called pi-mesons which have 270 times the mass of the electron, or the more exotic K-mesons with about 1,000 electron masses. K-meson beams have been particularly valuable recently in the production of further new particles. 1968M. S. Livingston Particle Physics iv. 81 The new particles were of two basic types: k mesons with mass values less than nucleon mass, now called kaons; and hyperons, with masses greater than the nucleon mass. 1973L. J. Tassie Physics Elem. Particles ix. 84 There are two kinds of neutral K-mesons, the K° and the K° .
Hence K-ˈmesic a. = kaonic a.
1958Phil. Mag. III. 33 Negative K-mesons captured by the heavy nuclei in nuclear emulsion form K-mesic atoms. 1967Comments Nucl. & Particle Physics I. 112 K-mesic x-rays from Li, Be, B, and C. |