Search Results - "Schef, P."

Precise hyperfine structure measurements of La II utilizing the laser and rf double resonance technique by Schef, P, Björkhage, M, Lundin, P, Mannervik, S

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The FERRUM project: experimentally determined metastable lifetimes and transition probabilities for forbidden [Ti ii] lines observed in η Carinae by Hartman, H., Schef, P., Lundin, P., Ellmann, A., Johansson, S., Lundberg, H., Mannervik, S., Norlin, L.-O., Rostohar, D., Royen, P.

“…In the spectrum of an emission-line region ejected from the massive star Eta Carinae, called the strontium filament (SrF), forbidden lines from many elements,…”
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Radiative lifetimes of metastable states of negative ions by Andersson, Pontus, Fritioff, Karin, Sandström, Joakim, Collins, Gerard, Hanstorp, Dag, Ellmann, Anna, Schef, Peter, Lundin, Peter, Mannervik, Sven, Royen, Peder, Froese Fischer, K. Charlotte, Österdahl, Fabian, Rostohar, Danijela, Pegg, David J., Gibson, N. D., Danared, Håkan, Källberg, Anders

“…We present a technique for measuring the radiative lifetimes of metastable states of negative ions that involves the use of a heavy-ion storage ring. The…”
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Decay of metastable states in Nd II by BIEMONT, E, ELLMANN, A, LUNDIN, P, MANNERVIK, S, NORLIN, L.-O, PALMERI, P, QUINET, P, ROSTOHAR, D, ROYEN, P, SCHEF, P

“…The difficulty associated with an accurate determination of transition rates for forbidden lines in lowly ionized heavy elements is illustrated in the case of…”
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Radiative lifetime of a bound excited state of Te by ELLMANN, A, SCHEF, P, PEGG, D. J, GIBSON, N. D, DANARED, H, KÄLLBERG, A, LUNDIN, P, ROYEN, P, MANNERVIK, S, FRITIOFF, K, ANDERSSON, P, HANSTORP, D, FISCHER, C. Froese, ÖSTERDAHL, F

“…We report on the first experimental study of the lifetime of a bound excited state of a negative ion. A new experimental technique was developed and used to…”
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On the importance of an M2 depopulating channel for a KrII metastable state by Biémont, Emile, Derkatch, A., Lundin, P., Mannervik, S., Norlin, L. O., Rostohar, D., Royen, P., Palmeri, P., Schef, P.

“…An experimental investigation of the radiative lifetime of the metastable 4s(2)4p(4)(P-3)4d D-4(7/2) level in Kr II shows an unusual situation regarding the…”
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Lifetime Measurements by Laser Probing in CRYRING – Recent Experimental Developments by Mannervik, S, Ellmann, A, Lundin, P, Norlin, L-O, Rostohar, D, Royen, P, Schef, P

“…A laser probing technique for lifetime measurements of long- lived metastable levels has been developed at the ion storage ring CRYRING. The method has been in…”
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Experimental Oscillator Strengths for Forbidden Lines in Complex Spectra by Hartman, H, Johansson, S, Lundberg, H, Lundin, P, Mannervik, S, Schef, P

“…In dilute astrophysical plasmas, such as planetary nebulae and H II regions, strong lines appear that only have weak, if any, correspondence to the spectrum of…”
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Lifetimes of metastable levels in ArII by Schef, P., Derkatch, A., Lundin, P., Mannervik, S., Norlin, L. O., Rostohar, D., Royen, P., Biémont, Emile

“…We report on a calculation of five lifetimes of metastable levels in Ar II, obtained with a relativistic Hartree-Fock method in which most of the intravalence…”
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Lifetimes of metastable levels in Ar II by SCHEF, P, DERKATCH, A, LUNDIN, P, MANNERVIK, S, NORLIN, L.-O, ROSTOHAR, D, ROYEN, P, BIEMONT, E

“…We report on a calculation of five lifetimes of metastable levels in Ar II, obtained with a relativistic Hartree-Fock method in which most of the intravalence…”
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Violet Diode Laser in Time-Resolved Stored-Ion Spectroscopy by Somesfalean, G, Alnis, J, Svanberg, S, Derkatch, A, Mannervik, S, Rostohar, D, Royen, P, Schef, P, Norlin, L-O

“…Lifetime measurements of the metastable 3d D-2(3/2) level in singly charged calcium were performed using the newly developed violet diode laser operated in an…”
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Disentanglement of magnetic field mixing reveals the spontaneous M2 decay rate for a metastable level in Xe by Schef, P., Lundin, P., Biémont, Emile, Kallberg, A., Norlin, L. O., Palmeri, P., Royen, P., Simonsson, A., Mannervik, S.

“…We have investigated the radiative decay of the metastable level 5d(4)D(7/2) in Xe+. Theoretically we find the decay to be heavily dominated by an M2…”
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Experimental and theoretical investigation of radiative decay rates of metastable levels in LaII by Derkatch, A., Ilyinsky, L., Mannervik, S., Norlin, L. O., Rostohar, D., Royen, P., Schef, P., Biémont, Emile

“…An experimental and theoretical investigation of lifetimes of metastable levels in La II has been performed. The experimentally obtained results using the…”
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Importance of an M2 depopulating channel for a Kr II metastable state by Biémont, E, Derkatch, A, Lundin, P, Mannervik, S, Norlin, L-O, Rostohar, D, Royen, P, Palmeri, P, Schef, P

“…An experimental investigation of the radiative lifetime of the metastable 4s24p4(3P)4d4D7/2 level in Kr II shows an unusual situation regarding the importance…”
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Importance of an M 2 Depopulating Channel for a Kr II Metastable State by Biémont, E., Derkatch, A., Lundin, P., Mannervik, S., Norlin, L.-O., Rostohar, D., Royen, P., Palmeri, P., Schef, P.

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The FERRUM project: experimentally determined metastable lifetimes and transition probabilities for forbidden [Ti ii] lines observed in η Carinae by Hartman, H., Schef, P., Lundin, P., Ellmann, A., Johansson, S., Lundberg, H., Mannervik, S., Norlin, L.-O., Rostohar, D., Royen, P.

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The FERRUM project: experimentally determined metastable lifetimes and transition probabilities for forbidden [Ti ii] lines observed in [eta] Carinae by Hartman, H, Schef, P, Lundin, P, Ellmann, A, Johansson, S, Lundberg, H, Mannervik, S, L.-O. Norlin, Rostohar, D, Royen, P

“…In the spectrum of an emission-line region ejected from the massive star Eta Carinae, called the strontium filament (SrF), forbidden lines from many elements,…”
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Decay of metastable states in NdII by Biémont, Emile, Ellmann, A., Lundin, P., Mannervik, S., Norlin, L. O., Palmeri, P., Quinet, Pascal, Rostohar, D., Royen, P., Schef, P.

“…The difficulty associated with an accurate determination of transition rates for forbidden lines in lowly ionized heavy elements is illustrated in the case of…”
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Importance of an M2 depopulating channel for a Kr II metastable state by BIEMONT, E, DERKATCH, A, LUNDIN, P, MANNERVIK, S, NORLIN, L.-O, ROSTOHAR, D, ROYEN, P, PALMERI, P, SCHEF, P

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Laser-probing measurements and calculations of lifetimes of the 5d D-2(3/2) and 5d D-2(5/2) metastable levels in BaII by Gurell, J., Biémont, Emile, Blagoev, K., Fivet, V., Lundin, P., Mannervik, S., Norlin, L. O., Quinet, Pascal, Rostohar, D., Royen, P., Schef, P.

“…The two metastable levels 5d(2)D(3/2) and 5d(2) D-5/2 in Ba II both show extremely long lifetimes of the order of several tens of seconds each. This has been…”
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