What can we know about hypernuclei via analysis of bremsstrahlung photons?

Abstract

We investigate possibility of emission of the bremsstrahlung photons in nuclear reactions with hypernuclei for the first time. A new model of the bremsstrahlung emission which accompanies interactions between α particles and hypernuclei is constructed, where a new formalism for the magnetic momenta of nucleons and hyperon inside hypernucleus is added. For first calculations, we choose α decay of the normal nucleus 210 Po and the hypernucleus 211 Λ Po. We find that (1) emission for the hypernucleus 211 Λ Po is larger than for normal nucleus 210 Po, (2) difference between these spectra is small. We propose a way how to find hypernuclei, where role of hyperon is the most essential in emission of bremsstrahlung photons during α decay. As demonstration of such a property, we show that the spectra for the hypernuclei 107 Λ Te and 109 Λ Te are essentially larger than the spectra for the normal nuclei 106 Te and 108 Te. Such a difference is explained by additional contribution of emission to the full bremsstrahlung, which is formed by magnetic moment of hyperon inside hypernucleus. The bremsstrahlung emission formed by such a mechanism, is of the magnetic type. A new formula for fast estimations of bremsstrahlung spectra for even-even hypernuclei is proposed, where role of magnetic moment of hyperon of hypernucleus in formation of the bremsstrahlung emission is shown explicitly. Such an analysis opens possibility of new experimental study of properties of hypernuclei via bremsstrahlung study.

Nucleon microscopy in proton-nucleus scattering via analysis of bremsstrahlung emission

“…Now we calculate the full matrix element of the bremsstrahlung emission. We define it, using as basis our previous formalism [28,29,[31][32][33] (see also Refs. [50][51][52][53][54][55][56][57][58][59]) as…”

“…As we found, this is many-nucleon generalisation of Pauli equation with interacting potential investigated in Refs. [28,29,[31][32][33]. This way allows us to construct formalism with some connection with many-nucleon bremsstrahlung developments of other researchers [34][35][36][37][38][39][40][41][42][43][44][45][46] (here, evolution of nucleons is investigated as many body problem of quantum mechanics that allows to save quantum properties maximally completely).…”