Experimental Limit on Neutron Orbital Angular Momentum Detection Using Polarized 3He
D. Sarenac; O. Lailey; D. V. Garrad; P. R. Vadnere; N. Shentevski; C. W. Clark; D. G. Cory; J. P. Cotter · 2026 · arXiv
WASTE classifies this as Negative / Null Result Report · AI classification, approximate
The study found no significant effect — useful as a negative control or null benchmark for your own design.
The finding, in one line
“This null result places stringent constraints on polarized 3He-based OAM detection schemes.”
Abstract (excerpt)
A recent proposal suggested that neutron orbital angular momentum (OAM) states could be detected via spin-polarized absorption in polarized 3He, with predicted cross-section variations linked to the neutron's OAM. We experimentally tested this hypothesis using spin-polarized neutron beams with OAM =-2 to 2, generated by fork-dislocation phase-gratings, and transmitted through a polarized 3He cell. Within statistical precision, no OAM-dependent change in the absorption cross section was observed. This null result places stringent constraints on polarized 3He-based OAM detection schemes. The abs
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Metadata source: arXiv