Meitner–Hupfeld effect

The Meitner–Hupfeld effect, named after Lise Meitner and Hans-Hermann Hupfeld, is an anomalously large scattering of gamma rays by heavy elements. The effect was later explained by a broad theory from which evolved the Standard Model, a theory for explaining the structure of the atomic nucleus. The anomalous gamma-ray behavior was eventually ascribed to electron–positron pair production and annihilation.

Although Professor Meitner was recognized for her work,^[1] Dr. Hupfeld is usually ignored, and little or no account of his life exists.

See also

• Pair production
• Electron-positron annihilation

References

1. Brown LM, Moyer DF (1984). "Lady or tiger?—The Meitner–Hupfeld effect and Heisenberg's neutron theory". American Journal of Physics. 52 (2): 130–136. Bibcode:1984AmJPh..52..130B. doi:10.1119/1.13920.