Method for data reduction at energy-lifetime measurements

Bartsch, Helen; Huber, Klaus; Kneißl, U.; Sattler, H.

doi:10.1016/0029-554x(74)90155-4

Cited by 30 publications

(9 citation statements)

References 2 publications

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“…The red curve represents the time density distribution of electrons correlated to the evaporation residue of 252 No, and the peak position determines the lifetime via the ln(τ ) relation. This method [34,35] allows the discrimination of contributions from sources having different lifetimes. The distinct cluster with a lifetime of 156 μs corresponds most likely to the de-excitation of an isomeric state in 253 No.…”

Section: A Delayed Spectroscopymentioning

confidence: 99%

Investigation of high-Kstates in252No

Sulignano¹,

Theisen²,

Delaroche³

et al. 2012

Phys. Rev. C

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Section: A Delayed Spectroscopymentioning

confidence: 99%

Investigation of high-Kstates in252No

Sulignano¹,

Theisen²,

Delaroche³

et al. 2012

Phys. Rev. C

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“…Of these four measurements, two report uncertainties of 3 and 5 μs, around values of 0.300 [12] and 0.301 ms [13], respectively, and these clearly determine the resulting value in the weighting procedure. The current result does not agree with these prior measurements and therefore more work is planned in an attempt to understand this discrepancy.…”

Section: M1 Ymentioning

confidence: 94%

New Millisecond Isomer Lifetime Measurements at LANSCE

Devlin

Nelson

Fotiades

et al. 2014

Nuclear Data Sheets

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“…Figure 5 shows the time difference ΔT between the α-emission of the evaporation residues implanted in the focal plane detector and the detection of electrons. The time difference is represented in a convenient time-scale, ln(ΔT )/ ln(2), inspired by the work of Bartsch et al [30] and Schmidt [31].…”

Section: Methodsmentioning

confidence: 99%

Gamma and electron spectroscopy of transfermium isotopes at Dubna: Results and plans

et al. 2010

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Detailed spectroscopic information of excited nuclear states in deformed transfermium nuclei is scarce. Most of the information available today has been obtained from investigations of fine-structure α-decay. Although α decay gives access to hindrance factors and lifetimes which are strongly correlated to shell/subshell closures and the presence of isomers, only the combined use of γ and conversion electron spectroscopy allows the precise determination of excitation energy, spin and parity of nuclear levels.In the years 2004-2009 using the GABRIELA set-up [Hauschild et al, Nucl. Instrum. Methods A560, 388 (2006)] at the focal plane of VASSILISSA separator [Malyshev et al, Nucl. Instrum. Methods A440, 86 (2000); A516, 529 (2004)] experiments with the aim of γ and electron spectroscopy of the isotopes from Fm to Lr, formed by complete fusion reactions with accelerated heavy ions were performed. In the following, the preliminary results of decay studies using α-γ and α-β coincidences at the focal plane of the VASSILISSA recoil separator are presented.Accumulated experience allowed us to perform ion optical calculations and to design the new experimental set-up, which will collect the base and best parameters of the existing separators and complex detector systems used at the focal planes of these installations. In the near future it is planned to study neutron-rich isotopes of the Rf-Sg in the 'hot' fusion reactions with 22 Ne incident projectiles and 242 Pu, 243 Am and 248 Cm targets.Keywords. Recoil separator; heavy ion-induced reactions; properties of nuclei with 220 ≤ A; γ-transitions and level energies.

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Method for data reduction at energy-lifetime measurements

Cited by 30 publications

References 2 publications

Investigation of high-Kstates in252No

Investigation of high-Kstates in252No

New Millisecond Isomer Lifetime Measurements at LANSCE

Gamma and electron spectroscopy of transfermium isotopes at Dubna: Results and plans

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