A broad-range on-line electron spectrometer

Konijn, J.; Posthumus, W.L.; Goudsmit, P.F.A.; Schiebaan, C.; Geerke, H.P.; Maarleveld, J.L.; Andringa, J.H.S.; Evens, G.J.

doi:10.1016/0029-554x(75)90126-3

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…The detector is mounted in a set-up incorporating a 70 cm long electron-transport solenoid [7]. The resolution obtained was 1.8 at 140 keV.…”

Section: Conversion-electron Measurementsmentioning

confidence: 99%

The decay of174Ta

Cardoso¹,

Klieb²,

Goudsmit³

et al. 1975

Z Physik A

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Abstract. Levels in t74Hf excited in the decay of ~V4Ta have been studied. Measurements of gamma-rays, conversion electrons and gamma-gamma-time coincidences were performed. The ground state band, the beta-vibrational band, the gamma-vibrational band with its head at 1226.81keV, a K=3 + band at 1303.42keV and a K=2-octupole band at 1308.67 keV were observed. Several 2 + levels with K -0 are excited. The main fl+-branches proceed through allowed or first-forbidden transitions to the 2 + and 4 + levels of the ground state band. The character of the I" = 3 ~ +) ground state of 174Ta is discussed. E Radioactivity 174Ta I-from 175Lu(3He, 4n)

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“…The detector is mounted in a set-up incorporating a 70 cm long electron-transport solenoid [7]. The resolution obtained was 1.8 at 140 keV.…”

Section: Conversion-electron Measurementsmentioning

confidence: 99%

The decay of174Ta

Cardoso¹,

Klieb²,

Goudsmit³

et al. 1975

Z Physik A

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“…The conversion electron spectrum was recorded with our broadrange electron transport solenoid Si(Li) spectrometer [18]. Fig.…”

Section: Conversion Electron Spectroscopymentioning

confidence: 99%

Levels in²⁰⁶Po populated in the EC-β⁺decay of²⁰⁶At

Lingeman¹

1977

Phys. Scr.

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Levels of 84 206Po122 excited in the positon decay of 85 206At121 have been studied. Measured were γ-rays, conversion electrons, positons and γ-γ coincidences. Energies and relative intensities of 60 γ-rays following the decay of 206At have been measured. The positon spectrum was found to contain two branches. The total disintegration energy is 5 687±150 keV. Conversion coefficients and multipolarities of the strongest transitions have been determined. The existence of levels with the following energies in keV (spin-parities in parentheses) was deduced: 700.66(2+); 1 177.76(4+); 1 434.34(4+); 1 573.30(6+); 1 915.81; 2 100.73(4,5-); 2 138.85(4,5,6+); 2 302.57; 2 500.50; 2 581.69; 2 916.97(5,6+); 3 361.83; 3 396.45; 3 595.45(5,6+); 3 872.11; 4 038.80; 4 409.92; 4 419.53 and 4 697.84. The half-life of 206At was measured to be 29.3±0.4 m. The spin-parity of the 206At ground-state is found to be 5+.

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“…The apparatus is similar to electron transport systems described earlier [2][3][4][5]. Essentially it consists of two solenoidal coils and a LN 2 cooled Si(Li)-detector (Fig.…”

Section: The Experimental Apparatusmentioning

confidence: 99%

In-beam spectroscopy of low energy conversion electrons with a recoil shadow method ? A new possibility for subnanosecond lifetime measurements

Backe¹,

Richter²,

Willwater³

et al. 1978

Z Physik A

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An electron spectrometer consisting of an electron transport system with normal conducting solenoidal coils and a Si(Li)-detector as the energy dispersive element is described. It can be used for in beam spectroscopy of electrons in three different modes. The first one is the usual broad range mode with a low energy cut offofthe transmission performed by a tantalum disk between target and detector. The second one is the lens spectrometer mode. An envelope baffle system permits electron detection in a momentum band A pip = 0.12. To cover a large energy range the magnet current is sweeped. In the third mode-the recoil shadow method -a longitudinal semicylindrical baffle between target and Si(Li)-detector allows spectroscopy of delayed electrons emitted from recoil nuclei in flight. Special features of this method are high transmission, and strong suppression of the prompt 3-electron background. Lifetime measurements based on the detection of conversion electrons are possible by variation of the target position. This was tested with the 152Sm(160, x n) 168 -xyb compound nuclear reaction at a recoil velocity vr = 0.01 c, where half lives between 0.1 ns and 1 ns were determined.

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A broad-range on-line electron spectrometer

Cited by 10 publications

References 5 publications

The decay of174Ta

The decay of174Ta

Levels in²⁰⁶Po populated in the EC-β⁺decay of²⁰⁶At

In-beam spectroscopy of low energy conversion electrons with a recoil shadow method ? A new possibility for subnanosecond lifetime measurements

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A broad-range on-line electron spectrometer

Cited by 10 publications

References 5 publications

The decay of174Ta

The decay of174Ta

Levels in206Po populated in the EC-β+decay of206At

In-beam spectroscopy of low energy conversion electrons with a recoil shadow method ? A new possibility for subnanosecond lifetime measurements

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Levels in²⁰⁶Po populated in the EC-β⁺decay of²⁰⁶At