Ausbeutemessungen beim Sto� langsamer Elektronen mit Edelgasatomen

Maier-Leibnitz, H.

doi:10.1007/bf01331057

Cited by 156 publications

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“…max 2 (5) The error here is about 40% due to the uncertainty in the 2 3 S L cross section of He. 13 The cross sections in (4) and (5) agree well. Agreement with a recently reported theoretical maximum value of 3.…”

Section: =I B N(dq/de)aelmentioning

confidence: 52%

“…The secondary electron current leaving T increased by about a factor of 3 and saturated if • T x , T 2 were made a few volts positive. Under this condition essentially all secondary electrons left T. This was verified for He, where the cross section for the production of the 2 3 S t metastable state 13 ? 14 and the secondary yield are known.…”

Section: Introductionmentioning

confidence: 86%

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Production of Metastable Mercury Atoms by Electron Impact

Borst

1969

Phys. Rev.

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Excitation of Hg atoms by electron impact, particularly into metastable states, was studied in the energy range 4 to 15 eV. The excitation function for the 6 3 P 2 metastable state (5.46 eV) was measured from threshold up to 8.5 eV. The absolute cross-sectional scale for this state was calibrated by monitoring slow inelastically scattered electrons near threshold. The cross section had a maximum value of 3.2 x l(T 16 cm 2 ± 25% (rms) at 5.75 eV and dropped to half this value at about 8 eV. An electron beam of 0.1-eV half-width was produced by the Retarding Potential Difference RPD method. Excited atoms were detected by electron ejection from a tungsten surface. The secondary electron yield for the 6 2 P 2 state was typically 2 x 10"" 4 . Pronounced structure in the detector current with maxima at 9.00 and 9.60 eV was attributed to the 7 3 Pj state (8.64 eV). It appears that the contribution of the 6p' 3 Z> 3° metastable state was minor. An upper limit of a few times 10" 18 cm 2 was estimated for the maximum cross section of this state. Another region of structure in the total detector current occurred close to and above ionization threshold. Experimental evidence indicates that this structure was produced by long-lived auto-ionizing states.

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Section: =I B N(dq/de)aelmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 86%

Production of Metastable Mercury Atoms by Electron Impact

Borst

1969

Phys. Rev.

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“…An analysis of the experimental data for electrons with energies less then 45 eV has been made by Frost and Phelps 4 collected data from the observations of Lies, 5 Thieme, 6 Maier-Leibnitz, 7 Dorrenstein, 8 and Schulz. 9 The curve obtained by Frost and Phelps 4 (quoted in the work of Massey and Moiseiwitsch 3 ) rises to a maximum of o-to t^0.07 a 2 at an incident electron energy around 22.5 eV and gives a-to t^0.045 a 2 at 39 eV (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Rearrangement Collisions. II. Electron Excitation of He (23P)

Joachain

Mittleman

1966

Phys. Rev.

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“…2,3 The 2022-A lead resonance light is produced in a flow-lamp light source and a 5005-A interference filter is used in front of the photomultiplier. The rest of the apparatus is identical to that described in Ref.…”

Section: Methodsmentioning

confidence: 99%

Lifetime of the(6s26p7s)P1
Saloman
¹

1966
Phys. Rev.
5
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0
0
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Hanle-effect studies have been made in the (6s 2 6p7s) ^Pi 0 state of lead. Pb 208 atoms were excited to this state by 2022-A lead resonance light, and the 5005-A cross-fluorescent line from this state was detected. The width of the level-crossing signal corresponds to a lifetime for this state of 4.99(15)X10~9 sec, where the quoted uncertainty is three times the standard deviation. This value is a factor of 4 longer than the value calculated from the oscillator strengths of Corliss and Bozman.

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Ausbeutemessungen beim Sto� langsamer Elektronen mit Edelgasatomen

Cited by 156 publications

References 0 publications

Production of Metastable Mercury Atoms by Electron Impact

Production of Metastable Mercury Atoms by Electron Impact

Rearrangement Collisions. II. Electron Excitation of He (23P)

Lifetime of the(6s26p7s)P1
Saloman
¹

1966
Phys. Rev.
5
0
0
0
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Ausbeutemessungen beim Sto� langsamer Elektronen mit Edelgasatomen

Cited by 156 publications

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Production of Metastable Mercury Atoms by Electron Impact

Production of Metastable Mercury Atoms by Electron Impact

Rearrangement Collisions. II. Electron Excitation of He (23P)

Lifetime of the(6s26p7s)P1Saloman1 1966Phys. Rev.5000View full textAdd to dashboardCite

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Lifetime of the(6s26p7s)P1
Saloman
¹

1966
Phys. Rev.
5
0
0
0
View full text Add to dashboard Cite