An electron-electron coincidence spectrometer adapted for in-beam measurement of short nuclear lifetimes

Lindskog, J.; Svensson, L.G.

doi:10.1016/0029-554x(76)90862-4

Cited by 10 publications

(5 citation statements)

References 13 publications

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“…These experiments were performed using a double long-lens electron coincidence spectrometer [13]. The instrument was initially constructed for electron-electron coincidence experiments but can easily be converted to other coincidence combinations with X-rays and gamma-rays, suitable for the experiment in question.…”

Section: Lifetime Measurementsmentioning

confidence: 99%

“…One of the magnetic lenses of the spectrometer was replaced with an X-ray detector made of a thin 1 mm x 20 mm sheet of a NE111 Plastic scintillator. The scintillator was mounted on a RCA 8850 photomultiplier tube with a constant fraction timing base [13]. The time resolution with this system was about 1.5 ns FWHM at these energies.…”

Section: Lifetime Measurementsmentioning

confidence: 99%

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Transition Probabilities of the 9/2⁺ → 7/2⁺ Transitions in Odd-mass Ag Isotopes

et al. 1976

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Conversion electrons from the 9/2+ → 7/2+ transitions in the odd-mass 105,107,111Ag nuclei have been studied in the radioactive decays of 105Cd, 107Cd and 111Pd, respectively. E2/M1 ratios have been deduced for these transitions and the half-lives of corresponding levels in 105,111Ag have been measured by means of the delayed coincidence technique. The reduced E2 transitions probabilities are compared with theoretical predictions.

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Section: Lifetime Measurementsmentioning

confidence: 99%

Section: Lifetime Measurementsmentioning

confidence: 99%

Transition Probabilities of the 9/2⁺ → 7/2⁺ Transitions in Odd-mass Ag Isotopes

et al. 1976

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“…This difference could arise from a systematic error occurring in the microwave method due to the use of low-frequency modulation to measure the prompt timing properties of fast plastic scintillators. Lindskog and Svensson (1976) have developed this method to be used for in-beam measurements as well as source measurements, thus increasing the number of states accessible. The spectrometer can detect electrons above about 100 keV.…”

Section: 22mentioning

confidence: 99%

“…The analysis of the results is carried out using either the slope method or the centroid method (see $3). Lindskog and Svensson (1976) have also carried out measurements using a pulsed beam where the data recorded are beam-pulse-electron coincidence. I n this case electrons down to about 20 keV may be detected during the beam-off period, where the time resolution of the apparatus is now 1.5 ns.…”

Section: 22mentioning

confidence: 99%

“…This method uses the principles described in 93 (electronic timing methods) to measure lifetimes in the 10 ps to 1 ns region. Lindskog and Svensson (1976) report the use of a magnetic long lens spectrometer to measure electron-electron coincidences. The idea in using this method rather than detecting the y-rays is to use the high-resolution properties of the spectrometer with the good…”

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confidence: 99%

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The measurement of the lifetimes of excited nuclear states

1979

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The experimental techniques of measuring the mean lifetimes T of excited nuclear states is reviewed. Emphasis is put on direct measurements of T in the region 10-18-10-6 s, especially on techniques involving the observation of Doppler energy shifts of y-rays. Indirect methods of obtaining T by measuring the widths or partial widths are discussed. Comparisons are made of the applicability, accuracy and reliability of the different experimental techniques.

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