Measurement of the total cross sections of ultracold neutrons with noble gases and search for long-range forces

• Published in: JETP letters Vol. 97; no. 12; pp. 676 - 680
• Main Authors: Serebrov, A. P., Geltenbort, P., Zherebtsov, O. M., Sbitnev, S. V., Varlamov, V. E., Vassiljev, A. V., Lasakov, M. S., Krasnoschekova, I. A., Ivanov, S. N.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-08-2013
• Subjects: Atomic; Biological and Medical Physics; Biophysics; Fields; Molecular; Nuclei; Optical and Plasma Physics; Particle and Nuclear Physics; Particles; Physics; Physics and Astronomy; Quantum Information Technology; Solid State Physics; Spintronics; Scatter Cross Section; JETP Letter; Capture Cross Section; Total Cross Section; Recoil Energy
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364013120114

The comparison of results of cross section measurements by the different methods can provide useful information on existence of long-range interaction. The total neutron cross sections of He, Ne, Ar, Kr, and Xe were measured using a method of ultracold neutrons. Measurements with ultra cold neutrons confirm the discrepancy between coherent cross-section of scattering for He measured by a neutron interferometer and scattering cross-section measured by the transmission method. The discrepancy makes up 5.3 standard deviations.