Cross section of slow neutrons on parahydrogen

J. Callerame, D. J. Larson, S. J. Lipson, R. Wilson

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The total cross section of slow neutrons on gaseous parahydrogen has been measured at several temperatures near 20 K and with pressures ranging from 250 to 750 Torr. A previous experiment had suggested that the cross section would exhibit a significant pressure dependence. However, no such pressure dependence was observed. The data give a value for the neutron-proton coherent scattering length of (-3.733±0.004) × 10-13 cm, in agreement with the latest liquid mirror measurements. NUCLEAR REACTIONS H1(n, n); E=4.2-4.6 meV; parahydrogen; measured total neutron cross section; deduced coherent scattering length.

Original languageEnglish (US)
Pages (from-to)1423-1427
Number of pages5
JournalPhysical Review C
Issue number5
StatePublished - Jan 1 1975

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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