1
|
Abstract
In online data bases, the entries on extreme ultraviolet (EUV) spectra of Ca are much more sparse than those of neighbouring elements such as Ar, K, Sc and Ti. This may be a result of experimental problems with Ca in the laboratory as well as of the limited role of multiply charged Ca ions in solar observations. Beam-foil EUV spectra of Ca and K are presented that provide survey data of a single element each.
Collapse
|
2
|
Abstract
In the interaction of fast ions with dense matter, the collision frequency is high enough to facilitate the simultaneous excitation of several electrons. Such multiply-excited few-electron systems have been exploited variously for plasma diagnostics. Beam-foil spectroscopic techniques, benefiting from the inherent time-resolution offered by the geometry of typical experiments, have proven particularly fruitful for the study of emission patterns and level lifetimes of specific multiply-excited levels, especially those of maximum spin and total angular momentum. Typical cases are recalled to illustrate some general principles. Among many others, earlier beam-foil measurements have targeted the core-excited 2p53s3p 4D7/2 – 2p5 3s3d 4F9/2 transition in several Na-like spectra ranging from S VI to Cu XIX. Data on the six intermediate elements missing at that time are now added. The interest in such atomic systems with multiple excitations and high total angular momentum values is discussed with a variety of examples.
Collapse
|
3
|
Critical Assessment of Theoretical Calculations of Atomic Structure and Transition Probabilities: An Experimenter’s View. ATOMS 2014. [DOI: 10.3390/atoms2010015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
4
|
Trabert E, Fawcett BC. Identification of satellite lines in the X-ray spectrum of foil-excited silicon. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3700/12/15/001] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
5
|
Mosnier JP, Barchewitz R, Cukier M, Dei-Cas R, Senemaud C, Bruneau J. Beam-foil spectroscopy of 2p to 1s transitions in Si XI to Si XIV ions. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/16/012] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
6
|
Beyer HF, Mann R, Folkmann F, Mokler PH. X-ray and Auger transitions in highly ionised argon recoil ions. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/15/21/010] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
7
|
Trabert E, Fawcett BC, Silver JD. One- and two-electron one-photon satellite transitions in the X-ray spectrum of foil-excited F and Si. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/15/20/009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
8
|
Armour IA, Silver JD, Trabert E. A lifetime measurement of the 1s2p3P1level in helium-like Mg and Al. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/14/19/009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
9
|
Armour IA, Silver JD, Trabert E, Fawcett BC. X-ray spectra and satellite classification of foil-excited Mg and Al. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/13/14/010] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
10
|
Martinson I. Recent progress in the studies of atomic spectra and transition probabilities by beam-foil spectroscopy. ACTA ACUST UNITED AC 1982. [DOI: 10.1016/0167-5087(82)90368-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Spectroscopy of Laser-Produced Plasmas. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/s0065-2199(08)60009-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
|