dorsal/arxiv
View SchemaPrecision bond lengths for Rydberg Matter clusters KN (N = 19, 37, 61 and 91) in excitation levels n = 4 - 8 from rotational radio-frequency emission spectra
| Authors | Leif Holmlid |
|---|---|
| Categories | |
| ArXiv ID | physics/0607193 |
| URL | https://arxiv.org/abs/physics/0607193 |
| DOI | 10.1080/00268970701197387 |
Abstract
Clusters of the electronically excited condensed matter Rydberg Matter (RM) are planar and six-fold symmetric with magic numbers N = 7, 19, 37, 61 and 91. The bond distances in the clusters are known with a precision of +- 5% both from theory and Coulomb explosion experiments. Long series of up to 40 consecutive lines from rotational transitions in such clusters are now observed in emission in the radio-frequency range 7-90 MHz. The clusters are produced in five different vacuum chambers equipped with RM emitters. The most prominent series with B = 0.9292 +- 0.0001 MHz agrees accurately with expectation (within 2%) for the planar six-fold symmetric cluster K19 in excitation level n = 4. Other long series agree even better with K19 at n = 5 and 6. The ratio between the interatomic distance and the theoretical electron orbit radius (the dimensional ratio) for K19 in n = 4 is found to be 2.8470 +- 0.0003. For clusters K19 (n = 6) and K37 (n = 7 and 8) the dimensional ratio 2.90 is the highest value that is found, which happens to be exactly the theoretical value. Clusters K61 and K91 in n = 5 and 6 have slightly lower dimensional ratios. This is expected since the edge effects are smaller. Intensity alternations are observed of approximately 7:3. The nuclear spins interact strongly with the magnetic field from the orbiting electrons. Spin transitions are observed with energy differences corresponding accurately (within 0.6%) to transitions with apparent total (delta)F = -3 at excitation levels n = 5 and 6. The angular momentum coupling schemes in the clusters are complex but well understood.
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"abstract": "Clusters of the electronically excited condensed matter Rydberg Matter (RM)\nare planar and six-fold symmetric with magic numbers N = 7, 19, 37, 61 and 91.\nThe bond distances in the clusters are known with a precision of +- 5% both\nfrom theory and Coulomb explosion experiments. Long series of up to 40\nconsecutive lines from rotational transitions in such clusters are now observed\nin emission in the radio-frequency range 7-90 MHz. The clusters are produced in\nfive different vacuum chambers equipped with RM emitters. The most prominent\nseries with B = 0.9292 +- 0.0001 MHz agrees accurately with expectation (within\n2%) for the planar six-fold symmetric cluster K19 in excitation level n = 4.\nOther long series agree even better with K19 at n = 5 and 6. The ratio between\nthe interatomic distance and the theoretical electron orbit radius (the\ndimensional ratio) for K19 in n = 4 is found to be 2.8470 +- 0.0003. For\nclusters K19 (n = 6) and K37 (n = 7 and 8) the dimensional ratio 2.90 is the\nhighest value that is found, which happens to be exactly the theoretical value.\nClusters K61 and K91 in n = 5 and 6 have slightly lower dimensional ratios.\nThis is expected since the edge effects are smaller. Intensity alternations are\nobserved of approximately 7:3. The nuclear spins interact strongly with the\nmagnetic field from the orbiting electrons. Spin transitions are observed with\nenergy differences corresponding accurately (within 0.6%) to transitions with\napparent total (delta)F = -3 at excitation levels n = 5 and 6. The angular\nmomentum coupling schemes in the clusters are complex but well understood.",
"arxiv_id": "physics/0607193",
"authors": [
"Leif Holmlid"
],
"categories": [
"physics.atm-clus",
"physics.chem-ph"
],
"doi": "10.1080/00268970701197387",
"title": "Precision bond lengths for Rydberg Matter clusters KN (N = 19, 37, 61 and 91) in excitation levels n = 4 - 8 from rotational radio-frequency emission spectra",
"url": "https://arxiv.org/abs/physics/0607193"
},
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