002914787 001__ 2914787
002914787 005__ 20241111162050.0
002914787 0247_ $$2DOI$$9APS$$a10.1103/PhysRevC.109.064320$$qpublication
002914787 0247_ $$2DOI$$9arXiv$$a10.1103/PhysRevC.109.064320$$qpublication
002914787 0248_ $$aoai:cds.cern.ch:2914787$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002914787 037__ $$9arXiv$$aarXiv:2401.06063$$cphysics.atom-ph
002914787 035__ $$9arXiv$$aoai:arXiv.org:2401.06063
002914787 035__ $$9Inspire$$aoai:inspirehep.net:2745630$$d2024-10-24T20:07:46Z$$h2024-10-25T09:50:44Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
002914787 035__ $$9Inspire$$a2745630
002914787 041__ $$aeng
002914787 100__ $$aGustafsson, Fredrik P.$$jORCID:0000-0003-2063-4310$$uCERN$$vEP Department, https://ror.org/01ggx4157CERN, 1211 Geneva 23, Switzerland
002914787 245__ $$9APS$$aSpin-flip-induced quadrupole resonance in odd-<math><mi>A</mi></math> exotic atoms
002914787 260__ $$c2024-06-24
002914787 269__ $$c2024-01-11
002914787 300__ $$a7 p
002914787 520__ $$9APS$$aWe examine the possible existence of quadrupole resonances in exotic atoms containing odd-<math><mi>A</mi></math> nuclei. We find that the spin flip of the deexciting exotic particle can induce a resonance, altering the orbital angular momentum of the nucleus by one quantum. This process results in an excited nucleus with a suppression in x-ray photon emissions during the exotic atom cascade. We provide specific cases of antiprotonic atoms of stable elements where this resonance effect is expected to occur. The study of this phenomena may provide insight into the strong interaction of deeply bound antiprotonic states in the proximity of the unpaired nucleon, and serve as a tool for probing short-lived excited nuclear states.
002914787 520__ $$9arXiv$$aWe examine the possible existence of quadrupole resonances in exotic atoms containing odd-$A$ nuclei. We find that the spin-flip of the de-exciting exotic particle can induce a resonance, altering the orbital angular momentum of the nucleus by one quanta. This process results in an excited nucleus with a suppression in x-ray photon emissions during the exotic atom cascade. We provide specific cases of antiprotonic atoms of stable elements where this resonance effect is expected to occur. The study of this phenomena may provide insight into the strong interaction of deeply bound antiprotonic states in the proximity of the unpaired nucleon, and serve as a tool for probing short-lived excited nuclear states.
002914787 540__ $$3publication$$aCC BY 4.0$$fCERN-APC$$gDAI/10296636$$uhttps://creativecommons.org/licenses/by/4.0/
002914787 540__ $$3preprint$$aCC BY 4.0$$uhttp://creativecommons.org/licenses/by/4.0/
002914787 542__ $$3publication$$dauthors$$g2024
002914787 595__ $$cCDS
002914787 65017 $$2arXiv$$anucl-th
002914787 65017 $$2SzGeCERN$$aNuclear Physics - Theory
002914787 65017 $$2arXiv$$aphysics.atom-ph
002914787 65017 $$2SzGeCERN$$aOther Fields of Physics
002914787 690C_ $$aCERN
002914787 690C_ $$aARTICLE
002914787 700__ $$aPęcak, Daniel$$jORCID:0000-0002-2462-2942$$uCracow, INP$$uWarsaw U. of Tech. (main)$$vhttps://ror.org/000sfad56Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland$$vFaculty of Physics, https://ror.org/00y0xnp53Warsaw University of Technology, Ulica Koszykowa 75, PL-00662 Warsaw, Poland
002914787 700__ $$aSowiński, Tomasz$$jORCID:0000-0002-7970-4371$$uCracow, INP$$vhttps://ror.org/000sfad56Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02668 Warsaw, Poland
002914787 773__ $$c064320$$mpublication$$n6$$pPhys. Rev. C$$v109$$xPhys. Rev. C 109, 064320 (2024)$$y2024
002914787 8564_ $$82626677$$s5506$$uhttp://cds.cern.ch/record/2914787/files/Fig2.png$$y00001 General scheme for matching the energetic condition for quadrupole resonance using the example of an antiprotonic $^{101}$Ru. The $|7/2^+)$ excited state $939\,\mathrm{keV}$ above the $|5/2^+)$ ground state matches the energy difference between electronic states of orbiting antiproton $|n=7,\ell=6\rangle$ and $|n=5,\ell=4\rangle$ (thin dashed arrows). Due to required total angular momentum conservation, the resonance is fully controlled by spin-flipping transitions \eqref{Eq9c}. In this case the states $|7,11/2,+;5/2,K\rangle$ and $|5,9/2,-;7/2,K\rangle$ are resonantly coupled by quadrupole interactions.
002914787 8564_ $$82626678$$s459669$$uhttp://cds.cern.ch/record/2914787/files/2401.06063.pdf$$yFulltext
002914787 8564_ $$82626679$$s342261$$uhttp://cds.cern.ch/record/2914787/files/Publication.pdf$$yFulltext
002914787 8564_ $$82626680$$s4499$$uhttp://cds.cern.ch/record/2914787/files/Fig1.png$$y00000 Schematic chart of possible decays from electronic states of an orbiting antiproton triggered by quadrupole interactions, having orbital angular momentum $\ell$. Note that in addition to the typical transitions with $\Delta j=0$ and $\Delta j=-2$ caused by amplitudes \eqref{Eq12a} and \eqref{Eq12b}, transitions that change the total particle spin by $\Delta j=-1$ are also possible due to the simultaneous change of the orbital angular momentum with $\Delta \ell=-2$ and the flip of particle spin. They are controlled by amplitudes \eqref{Eq12c}.
002914787 960__ $$a13
002914787 980__ $$aARTICLE