Combinative Isobaric Resonances CIRs by MSS and from previous precise data
Abstract
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.