2026-10-05 LENR-CANR.org (independent He-4 measurements)

Site: https://www.lenr-canr.org . An archive of LENR literature run by supporters of the field [memory, high]. Bears on Claim 2 (helium-4 correlated with excess heat; independent measurements).

Searched

Google: helium-4 excess heat correlation independent measurement De Ninno ENEA OR "Apicella" OR "Gozzi" palladium deuterium mass spectrometer. Opened http://www.lenr-canr.org/acrobat/DeNinnoAexperiment.pdf.

Found (partial)

• A. De Ninno, A. Frattolillo, A. Rizzo (ENEA, Unita Tecnico Scientifica Fusione, Frascati), E. Del Giudice (INFN Milan), G. Preparata (University of Milan / INFN), "Experimental evidence of 4He production in a cold fusion experiment", ENEA report RT/2002/41/FUS, 26 pp. [web: title page read on screen]. Search snippet from the same PDF: "excess heat and the Helium production are simultaneously measured as a function of short time intervals (less than 1 hour)". The ResearchGate abstract snippet: "We report the simultaneous production of excess enthalpy and of 4He in a one dimensional Palladium (Pd) stripe cathode electrolytically loaded." How it bears: a heat-and-helium measurement by a national laboratory (ENEA) group other than China Lake or SRI. It is an internal ENEA technical report; the authors include Preparata and Del Giudice, who proposed a coherence theory of cold fusion (interested in the result) [memory, medium]. Pages 2-26 not read (viewer did not page in time).
• Also named by search snippets, not opened: De Ninno et al., "4He detection in a cold fusion experiment" (lenr-canr DeNinnoAhedetectio.pdf; method for detecting small amounts of He in gas mixtures); Gozzi et al. (1998) heat-helium correlation (via a Wikiversity mirror snippet); Arata and Zhang (1998) helium (same snippet).

Calculation added for the reviewers (see also 2026-10-05-arxiv.md)

Helium per unit heat for d + d -> 4He + 23.8 MeV: 2.6e11 atoms per joule (arbiter.md).