Impurity channels of the long-lived Mossbauer effect

Abstract

Recent reports have suggested that the nuclear resonant absorption of a long-lived Mossbauer state e.g., 93mNb is mediated by an entangled photon pair (biphoton) rather than by a single photon. Multipolar nuclear excitation in crystals of a single isotope with a natural abundance of 100% spreads in a region containing billions of identical nuclei. As a consequence of the delocalisation, additional decay channels via the impurities, the crystal defects, and the sample boundary, give rise to a density- and temperature-dependent decay. In this letter we report our discovery of impurity channels, the intensity of which is proportional to the square of the 93mNb density.

Observations on the long-lived Mossbauer effects of 93mNb

“…2). No pronounced spectral migration of Nb K-lines given in previous work2 was found in these 160 data points.…”

“…2). It is worth noting that the anisotropic impurity channel of Ni revealed by the sub-Poissonian photon statistics2 is not caused by the phenomenon discussed here.…”

“…Neither 93m Nb γγ nor its Rabi splitting has previously been observed12, and till now the exact value of Ω R has not been known. Nevertheless, Ω R must be greater than 30 meV in order to survive the thermal agitation at room temperature.…”

“…To explain the resonant absorption of long-lived Mossbauer effects mediated by the biphoton γγ123, a theory has been developed to interpret the variety of available experimental observations. A brief introduction to the physics of this theory and its extension to 4 entangled γs is required.…”

“…Mollow triplets3 were observed for Rh K-lines and 103m Rh γ at 39.8 keV. The vacuum Rabi oscillation Ω R for M/N ≪ 1/2 is so fast that the recoil phonon never leaves, leading to an entanglement between γγ and the phonon2. The superradiance has an Avogadro number of N rather than N 1/2 , resulting from the superposition of N nuclei × N phonons in resonance1.…”