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@@ -306,8 +306,8 @@ \subsection{Controlling nuclear transitions with low frequency
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For energy applications, it is necessary to have a type of nuclear
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coupling that's both strong and tuneable. For practical purposes such
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tunability more easily achieved via low frequency stimulation because it
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typically requires smaller and less expensive equipment.
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tunability is more easily achieved via low frequency stimulation because
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it typically requires smaller and less expensive equipment.
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Peter Hagelstein \href{https://arxiv.org/abs/1201.4377}{first proposed}
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a novel form of relativistic phonon nuclear coupling in 2012. It relies
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\href{https://iopscience.iop.org/article/10.1088/1361-6455/acf3be}{peer
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reviewed in 2023}, it has yet to be experimentally verified.
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We propose a nuclear excitation transfer experiment in which we seek to
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observe the spreading out of emission of excited \(\rm ^{57}Fe\) as the
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nuclear energy is transferred from the excited \(\rm ^{57}Fe\) to
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neighbouring ground state \(\rm ^{57}Fe\). The excited nuclei are to
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generated from the decay of \(\rm ^{57}Co\) that's deposited on the
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\(\rm ^{57}Fe\) surface and the phonon coupling is generated via
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stimulation of the surface with a \(\rm THz\) laser.
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We propose to verify relativistic phonon nuclear coupling using a
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nuclear excitation transfer experiment. We'll look to observe the
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spreading out of emission of excited \(\rm ^{57}Fe\) as the nuclear
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energy is transferred from the excited \(\rm ^{57}Fe\) to neighbouring
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ground state \(\rm ^{57}Fe\). The excited nuclei are to generated from
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the decay of \(\rm ^{57}Co\) that's deposited on the \(\rm ^{57}Fe\)
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surface and the phonon coupling is generated via stimulation of the
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surface with a \(\rm THz\) laser.
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\subsection{Extracting nuclear energy in benign
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forms}\label{extracting-nuclear-energy-in-benign-forms}
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Relativistic phonon nuclear coupling is so strong that experiments will
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be in a form of deep strong coupling regime that was first proposed as
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an academic curiosity in 2010 by
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be operating in a regime sometimes called deep strong coupling. This
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regime was first proposed as an academic curiosity in 2010 by
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\href{https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.105.263603}{Casanova
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at.al} and only recently experimentally observed in ``artificial atoms''
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in \href{https://pubs.acs.org/doi/10.1021/acs.nanolett.7b03103}{2017 by
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``perturbation theory''.
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Deep strong coupling allows a free exchange of energy between the
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particles and the field. For the phonon-nuclear system this represents a
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free exchange of nuclear and vibrational energy. This presents an
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particles and the field. For the phonon-nuclear system, this represents
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a free exchange of nuclear and vibrational energy. This presents an
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opportunity to ``bleed off'' nuclear energy into vibrational energy and
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ultimately into heat. It also presents the reverse opportunity to turn
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vibrational energy into nuclear energy, e.g.~creating a controllable
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x-ray laser.
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Unlike artificial atoms, deep strong coupling for real atoms and nuclei
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requires a minimum field energy. Electromagnetic coupling is too small
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to make deep strong coupling possible for real atoms and nuclear.
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to make deep strong coupling possible for real atoms and nuclei.
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However, relativistic phonon nuclear coupling is so strong that only a
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very modest field energy of \(\sim \rm 10 \ mJ\) is needed.
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pdf/Nucleonics.pdf

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