Purcell modification of Auger and interatomic Coulombic decay
An excited two-atom system can decay via different competing relaxation processes. If the excess energy is sufficiently high the system may not only relax via spontaneous emission but can also undergo interatomic Coulombic decay or even Auger decay. We provide analytical expressions for the rates by...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/ac5caa |
| _version_ | 1797748427415617536 |
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| author | Janine Franz Stefan Yoshi Buhmann |
| author_facet | Janine Franz Stefan Yoshi Buhmann |
| author_sort | Janine Franz |
| collection | DOAJ |
| description | An excited two-atom system can decay via different competing relaxation processes. If the excess energy is sufficiently high the system may not only relax via spontaneous emission but can also undergo interatomic Coulombic decay or even Auger decay. We provide analytical expressions for the rates by including them into the same quantum optical framework on the basis of macroscopic quantum electrodynamics. By comparing the rates in free space we derive the atomic properties determining which decay channel dominates the relaxation. We show that by modifying the excitation propagation of the respective process via macroscopic bodies, in the spirit of the Purcell effect, one can control the ratio between the two dominating decay rates. We can relate the magnitude of the effect to characteristic length scales of each process, analyse the impact of a simple close-by surface onto a general two-atom system in detail and discuss the effect of a cavity onto the decay rates. We finally apply our theory to the example of a doubly excited HeNe-dimer. |
| first_indexed | 2024-03-12T16:05:35Z |
| format | Article |
| id | doaj.art-6f75a8d77bfa48179ff7b5adfc0794d8 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:05:35Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-6f75a8d77bfa48179ff7b5adfc0794d82023-08-09T14:23:35ZengIOP PublishingNew Journal of Physics1367-26302022-01-0124404300210.1088/1367-2630/ac5caaPurcell modification of Auger and interatomic Coulombic decayJanine Franz0Stefan Yoshi Buhmann1Physikalisches Institut, Albert-Ludwigs-Universität Freiburg , Hermann-Herder-Strasse 3, 79104 Freiburg, GermanyInstitut für Physik, Universität Kassel , Heinrich-Plett-Strasse 40, 34132 Kassel, GermanyAn excited two-atom system can decay via different competing relaxation processes. If the excess energy is sufficiently high the system may not only relax via spontaneous emission but can also undergo interatomic Coulombic decay or even Auger decay. We provide analytical expressions for the rates by including them into the same quantum optical framework on the basis of macroscopic quantum electrodynamics. By comparing the rates in free space we derive the atomic properties determining which decay channel dominates the relaxation. We show that by modifying the excitation propagation of the respective process via macroscopic bodies, in the spirit of the Purcell effect, one can control the ratio between the two dominating decay rates. We can relate the magnitude of the effect to characteristic length scales of each process, analyse the impact of a simple close-by surface onto a general two-atom system in detail and discuss the effect of a cavity onto the decay rates. We finally apply our theory to the example of a doubly excited HeNe-dimer.https://doi.org/10.1088/1367-2630/ac5caainteratomic Coulombic decayenergy transfermacroscopic quantum electrodynamicsAuger decayPurcell effectradiative decay |
| spellingShingle | Janine Franz Stefan Yoshi Buhmann Purcell modification of Auger and interatomic Coulombic decay New Journal of Physics interatomic Coulombic decay energy transfer macroscopic quantum electrodynamics Auger decay Purcell effect radiative decay |
| title | Purcell modification of Auger and interatomic Coulombic decay |
| title_full | Purcell modification of Auger and interatomic Coulombic decay |
| title_fullStr | Purcell modification of Auger and interatomic Coulombic decay |
| title_full_unstemmed | Purcell modification of Auger and interatomic Coulombic decay |
| title_short | Purcell modification of Auger and interatomic Coulombic decay |
| title_sort | purcell modification of auger and interatomic coulombic decay |
| topic | interatomic Coulombic decay energy transfer macroscopic quantum electrodynamics Auger decay Purcell effect radiative decay |
| url | https://doi.org/10.1088/1367-2630/ac5caa |
| work_keys_str_mv | AT janinefranz purcellmodificationofaugerandinteratomiccoulombicdecay AT stefanyoshibuhmann purcellmodificationofaugerandinteratomiccoulombicdecay |