Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio
Spectra of [Al VI] 3.66 μm 3P 2 ← 3P 1 in the coronal region of PN NGC 6302, obtained with Phoenix on Gemini-South at resolving powers of up to 75000, resolve the line into five hyperfine components separated by 20 to 60 km s -1 due to the coupling of the I = 5/2 nuclear spin of 27Al with the total...
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| Format: | Conference item |
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2005
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| _version_ | 1826282872299847680 |
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| author | Casassus, S Storey, P Barlow, M Roche, P |
| author_facet | Casassus, S Storey, P Barlow, M Roche, P |
| author_sort | Casassus, S |
| collection | OXFORD |
| description | Spectra of [Al VI] 3.66 μm 3P 2 ← 3P 1 in the coronal region of PN NGC 6302, obtained with Phoenix on Gemini-South at resolving powers of up to 75000, resolve the line into five hyperfine components separated by 20 to 60 km s -1 due to the coupling of the I = 5/2 nuclear spin of 27Al with the total electronic angular momentum J. 26Al has a different nuclear spin of I = 5, and a different hyperfine structure (HFS), which allows us to place a 3 σ upper limit on the 26Al/ 27Al ratio of 1/33. We measure the HFS magnetic-dipole coupling constants for [Al VI], and provide the first observational estimates of atomic electric-quadrupole HFS coupling constants. © 2005 American Institute of Physics. |
| first_indexed | 2024-03-07T00:50:23Z |
| format | Conference item |
| id | oxford-uuid:863147a6-b1df-44ec-99e5-e12618aeb7c2 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T00:50:23Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:863147a6-b1df-44ec-99e5-e12618aeb7c22022-03-26T22:02:25ZHyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratioConference itemhttp://purl.org/coar/resource_type/c_5794uuid:863147a6-b1df-44ec-99e5-e12618aeb7c2Symplectic Elements at Oxford2005Casassus, SStorey, PBarlow, MRoche, PSpectra of [Al VI] 3.66 μm 3P 2 ← 3P 1 in the coronal region of PN NGC 6302, obtained with Phoenix on Gemini-South at resolving powers of up to 75000, resolve the line into five hyperfine components separated by 20 to 60 km s -1 due to the coupling of the I = 5/2 nuclear spin of 27Al with the total electronic angular momentum J. 26Al has a different nuclear spin of I = 5, and a different hyperfine structure (HFS), which allows us to place a 3 σ upper limit on the 26Al/ 27Al ratio of 1/33. We measure the HFS magnetic-dipole coupling constants for [Al VI], and provide the first observational estimates of atomic electric-quadrupole HFS coupling constants. © 2005 American Institute of Physics. |
| spellingShingle | Casassus, S Storey, P Barlow, M Roche, P Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title | Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title_full | Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title_fullStr | Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title_full_unstemmed | Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title_short | Hyperfine splitting of [Al VI] 3.66 μm and the Al isotopic ratio |
| title_sort | hyperfine splitting of al vi 3 66 μm and the al isotopic ratio |
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