2020/11/17 by A.A. Gafarov, Gafarov, A.
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Solar and Stellar Astrophysics (astro-ph.SR)
paper · pdf · doi:10.48550/arxiv.2011.09131
openalex publication_date 2020/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The elastic scattering 12C(p,po_) Excitation Function (EF) was measured in the energy range Ep =16 - 19.5 MeV with resolution about 10 keV by means of innovative approach - MSS - the Method of Spectra Superposition at the 14-angle Magnetic Spectrograph (Apelsin) at beam with an energy spread of about 200 keV from U-150 cyclotron of INP Ulugbek (Tashkent) of Science Academy of Uzbekistan [1-9]. The obtained EF has a reach structure of anomalies in precise agreement with thresholds and levels data [2,10-12]. Measurements were done on the 12C self-supporting target with thickness 13 mg/cm2 and an area of 1 cm2 in the center of Apelsin. The 20-step Energy Moderator controlled the proton energy, providing a 3.5 MeV wide Ep interval with no readjustment of cyclotron and all the ionic-optics on the 41-meter-long beam-pipe. Energy resolution of Apelsin for protons is better than 5 keV. The spectrograph magnetic field was stabilized to 3ppm by NMR-monitor system [1,9]. The EF of 12C (p,po_) scattering has many resonances that precisely correspond to g.s. and levels of well-known product-nuclei. But 80% of anomalies were not decoded. A new concept of Combinative Isobaric Resonance (CIRs) proposed to identify these anomalies. The proposed CIRs concept worked very promising (Fig. 4). To prove CIRs validity, precise excitation function of 12C(p,po_), 12C(d,do_), and 7Li(p,po_), were analyzed in search for the Combinative Isobaric Resonances. This study perfectly proves existence of CIRs.