Laboratory and stellar spectroscopy of the complex ions Fe+, Mo+, Th+ and U+

Hampus Nilsson

Laboratory and stellar spectroscopy of the complex ions Fe+, Mo+, Th+ and U+

Hampus Nilsson

Research output: Thesis › Doctoral Thesis (compilation)

Abstract

The new generation of high resolution astronomical instruments such as the Hubble Space Telescope (HST) or the Very Large Telescope (VLT) has renewed the demand for accurate atomic parameters like wavelengths, oscillator strengths and line profiles accompanied by reliable uncertainty estimates. Fourier transform spectroscopy has proven to be a powerful tool when measuring these parameters. In this thesis new oscillator strengths in Fe II, Mo II, Th II and U II measured with Fourier transform spectroscopy are presented together with a method of how to treat the uncertainties of f-values measured with the emission technique. An extended term analysis of Mo II is also presented, including more than 100 new energy levels. Calculated f-values for all classified Mo II transitions are included. Some astrophysical applications of the new atomic data are demonstrated.

Original language	English
Qualification	Doctor
Awarding Institution
Supervisors/Advisors	[unknown], [unknown], Supervisor, External person
Award date	2002 Jun 1
Publisher	Hampus Nilsson, Lund University,
ISBN (Print)	91-628-5205-1
Publication status	Published - 2002

Bibliographical note

Defence details

Date: 2002-06-01
Time: 13:15
Place: Lundmarkssalen, Lund Observatory

External reviewer(s)

Name: Andersen, Torkild
Title: Prof
Affiliation: [unknown]

---

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Free keywords

molybdenum
iron
thorium
uranium.
Atomic and molecular physics
Atom- och molekylärfysik
Astronomy
space research
cosmic chemistry
Astronomi
rymdvetenskap
kosmisk kemi
Condensed matter:electronic structure
electrical
spektroskopi
magnetisk resonans
supraledare
magnetiska och optiska)
egenskaper (elektriska
Kondenserade materiens egenskaper:elektronstruktur
spectroscopy
relaxation
magnetic resonance
magnetic and optical properties
supraconductors
astrophysics
radiative lifetimes
oscillator strengths
term analysis
Fourier transform spectroscopy
branching fractions
Fysicumarkivet A:2002:Nilsson

6 Article

Extended term analysis of Mo II
Nilsson, H. & Pickering, J., 2003, In: Physica Scripta. 67, 3, p. 223-233
Research output: Contribution to journal › Article › peer-review
Experimental oscillator strengths in Th II
Nilsson, H., Zhang, Z. G., Lundberg, H., Johansson, S. & Nordström, B., 2002, In: Astronomy & Astrophysics. 382, 1, p. 368-377
Research output: Contribution to journal › Article › peer-review

Open Access
File
221 Downloads (Pure)
Experimental oscillator strengths in U II of cosmological interest
Nilsson, H., Ivarsson, S., Johansson, S. & Lundberg, H., 2002, In: Astronomy & Astrophysics. 381, 3, p. 1090-1093
Research output: Contribution to journal › Article › peer-review

Open Access
File
191 Downloads (Pure)

Cite this

@phdthesis{0665ebbcb9334cf1b16fa317bafb8edc,

title = "Laboratory and stellar spectroscopy of the complex ions Fe+, Mo+, Th+ and U+",

abstract = "The new generation of high resolution astronomical instruments such as the Hubble Space Telescope (HST) or the Very Large Telescope (VLT) has renewed the demand for accurate atomic parameters like wavelengths, oscillator strengths and line profiles accompanied by reliable uncertainty estimates. Fourier transform spectroscopy has proven to be a powerful tool when measuring these parameters. In this thesis new oscillator strengths in Fe II, Mo II, Th II and U II measured with Fourier transform spectroscopy are presented together with a method of how to treat the uncertainties of f-values measured with the emission technique. An extended term analysis of Mo II is also presented, including more than 100 new energy levels. Calculated f-values for all classified Mo II transitions are included. Some astrophysical applications of the new atomic data are demonstrated.",

keywords = "molybdenum, iron, thorium, uranium., Atomic and molecular physics, Atom- och molekyl{\"a}rfysik, Astronomy, space research, cosmic chemistry, Astronomi, rymdvetenskap, kosmisk kemi, Condensed matter:electronic structure, electrical, spektroskopi, magnetisk resonans, supraledare, magnetiska och optiska), egenskaper (elektriska, Kondenserade materiens egenskaper:elektronstruktur, spectroscopy, relaxation, magnetic resonance, magnetic and optical properties, supraconductors, astrophysics, radiative lifetimes, oscillator strengths, term analysis, Fourier transform spectroscopy, branching fractions, Fysicumarkivet A:2002:Nilsson",

author = "Hampus Nilsson",

note = "Defence details Date: 2002-06-01 Time: 13:15 Place: Lundmarkssalen, Lund Observatory External reviewer(s) Name: Andersen, Torkild Title: Prof Affiliation: [unknown] ---",

year = "2002",

language = "English",

isbn = "91-628-5205-1",

publisher = "Hampus Nilsson, Lund University,",

type = "Doctoral Thesis (compilation)",

}

TY - THES

T1 - Laboratory and stellar spectroscopy of the complex ions Fe+, Mo+, Th+ and U+

AU - Nilsson, Hampus

N1 - Defence details Date: 2002-06-01 Time: 13:15 Place: Lundmarkssalen, Lund Observatory External reviewer(s) Name: Andersen, Torkild Title: Prof Affiliation: [unknown] ---

PY - 2002

Y1 - 2002

N2 - The new generation of high resolution astronomical instruments such as the Hubble Space Telescope (HST) or the Very Large Telescope (VLT) has renewed the demand for accurate atomic parameters like wavelengths, oscillator strengths and line profiles accompanied by reliable uncertainty estimates. Fourier transform spectroscopy has proven to be a powerful tool when measuring these parameters. In this thesis new oscillator strengths in Fe II, Mo II, Th II and U II measured with Fourier transform spectroscopy are presented together with a method of how to treat the uncertainties of f-values measured with the emission technique. An extended term analysis of Mo II is also presented, including more than 100 new energy levels. Calculated f-values for all classified Mo II transitions are included. Some astrophysical applications of the new atomic data are demonstrated.

AB - The new generation of high resolution astronomical instruments such as the Hubble Space Telescope (HST) or the Very Large Telescope (VLT) has renewed the demand for accurate atomic parameters like wavelengths, oscillator strengths and line profiles accompanied by reliable uncertainty estimates. Fourier transform spectroscopy has proven to be a powerful tool when measuring these parameters. In this thesis new oscillator strengths in Fe II, Mo II, Th II and U II measured with Fourier transform spectroscopy are presented together with a method of how to treat the uncertainties of f-values measured with the emission technique. An extended term analysis of Mo II is also presented, including more than 100 new energy levels. Calculated f-values for all classified Mo II transitions are included. Some astrophysical applications of the new atomic data are demonstrated.

KW - molybdenum

KW - iron

KW - thorium

KW - uranium.

KW - Atomic and molecular physics

KW - Atom- och molekylärfysik

KW - Astronomy

KW - space research

KW - cosmic chemistry

KW - Astronomi

KW - rymdvetenskap

KW - kosmisk kemi

KW - Condensed matter:electronic structure

KW - electrical

KW - spektroskopi

KW - magnetisk resonans

KW - supraledare

KW - magnetiska och optiska)

KW - egenskaper (elektriska

KW - Kondenserade materiens egenskaper:elektronstruktur

KW - spectroscopy

KW - relaxation

KW - magnetic resonance

KW - magnetic and optical properties

KW - supraconductors

KW - astrophysics

KW - radiative lifetimes

KW - oscillator strengths

KW - term analysis

KW - Fourier transform spectroscopy

KW - branching fractions

KW - Fysicumarkivet A:2002:Nilsson

M3 - Doctoral Thesis (compilation)

SN - 91-628-5205-1

PB - Hampus Nilsson, Lund University,

ER -

Laboratory and stellar spectroscopy of the complex ions Fe+, Mo+, Th+ and U+

Abstract

Bibliographical note

Subject classification (UKÄ)

Free keywords

Fingerprint

Research output

Extended term analysis of Mo II

Experimental oscillator strengths in Th II

Experimental oscillator strengths in U II of cosmological interest

Cite this