ANOMALOUS ENHANCEMENT OF DD-REACTION, ALPHA- EMISSION AND X–RAY GENERATION IN THE HIGH- CURRENT PULSING DEUTERIUM GLOW-DISCHARGE WITH Ti-CATHODE AT THE VOLTAGES RANGING FROM 0.8-2.5 kV

Anomalous enhancement of DD-reaction, alpha emission and X-ray generation in the high current pulsing deuterium glow-discharge with Ti-cathode at the voltages ranging from 0.8-2.5 kV. ABSTRACT Using electronic noiseless solid state plastic track (CR-39) and Al 2 O 3 :C thermo-luminescent (TLD) detectors, the yields of charged particles (DD-reaction products and long-r a n g e α-particles) and X-ray photons are studied in the pulsing-periodic deuterium glow discharge with Ti-cathode at low discharge voltage (ranging of 0.8-2.5 kV) and high current density (300 –600 mA/cm 2). Analysis of DD-proton yields versus accelerating voltages, allowed to estimate the deuteron screening potential value U S at the deuteron energy range of 0.8 < E d < 2.45 keV. It was found that in this energy range the effective screening potential would be as high as U S = 620 ±140 eV. 1, INTRODUCTION Earlier it was established that high-current deuterium glow discharge (GD) with some metal cathodes, operating at relatively low voltage ranging from 0.8-2.0 kV, generates DD-reaction products and intensive soft X-rays [1]. It was shown that using stable voltage applied to GD it is possible, in principle, to study the dependence of DD-reaction product yield on the deuteron energy. At the same time, to this date the actual DD-cross-section vs. deuteron energy was measured only at E d (lab) ≥ 2. 5 k e V o n h i g h-current low voltage accelerators [2-4]. Unfortunately, the experiments with these accelerators for metal targets are limited by deuteron energy E d > 2.0 keV due to drastic decrease of beam current following the E d decrease. That is why, the DD reaction cross-section at lower deuteron energy is still approximated by Bosch & Halle S-factor function, which was built up empirically taking into account cross-section data at E d (lab.) > 5.0 keV. Meanwhile, the knowledge of DD-reaction yield at essentially lower energies Ed is strongly desirable to confirm Cold Fusion phenomena in deuterated solids as well as for astrophysical purposes. In this connection, regardless of some negative peculiarities of GD (in particular, higher deuteron energy spread compared to accelerator), utilization of high-current deuterium GD (300<I<500 mA) to study DD-reaction cross-section at very low deuteron energies may allow estimate yields of DD-reaction even at E d < 1.0 keV. In the present paper we carried out a systematic study of DD-reaction and X-ray yields in the pulse high-current GD and …