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Digitale Medien

Alpha decay of the new isotopes207, 208Ac (1994)

Leino, M. ; Uusitalo, J. ; Enqvist, T. ; [weitere]

Springer

The European physical journal 348 (1994), S. 151-152

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ISSN: 1434-601X

Schlagwort(e): 23.60.+e −25.70.-z −27.80.+w

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Two new neutron-deficient isotopes207,208Ac have been produced in fusion reactions with 5.2–5.6 MeV/nucleon40Ar ions on175Lu and identified on the basis of genetic correlations. The fusion evaporation products were separated on-line using a gas-filled magnetic recoil separator. The alpha energy and half-life of208Ac were determined to be (7572±15) keV and (95 −16 +24 ) ms, respectively. A new alpha line with a half-life of (25 −5 +9 ) ms and an energy of (7758±20) keV is assigned to the decay of an isomeric state in208Ac. Another new activity with a half-life of (22 −9 +40 ) ms and an alpha energy of (7712±25) keV is assigned to207Ac.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01289604

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Digitale Medien

Comparison of experimental and calculated K/L ratios of E0 transitions in some heavy nuclei (1990)

Trzaska, W. H. ; Kantele, J. ; Julin, R. ; [weitere]

Springer

The European physical journal 335 (1990), S. 475-476

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ISSN: 1434-601X

Schlagwort(e): 23.20.Nx ; 27.80.+w ; 29.30.Fq

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract A comparison of the experimental and theoretical K/L conversion-intensity ratios of E0 transitions in the lead region is presented. No major differences were found, the overall agreement being better than 7%. However, with the present data, a systematic 5% deficiency of the measured values, as compared with the calculated ones, can not be ruled out.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01290197

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Digitale Medien

Electromagnetic properties of low-spin states in102, 104Pd (1986)

Luontama, M. ; Julin, R. ; Kantele, J. ; [weitere]

Springer

The European physical journal 324 (1986), S. 317-324

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ISSN: 1434-601X

Schlagwort(e): 23.20.Ck ; 27.60.+j

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract Electromagnetic transitions from low-lying 0+, 2+, 4+ and 3− states in102, 104Pd have been studied using (p, 2n) and (p, p′) reactions and Coulomb excitation. TheE2 transition probabilities from the 0 3 + state in102Pd (13 W.u.) and from the 02/+ state in104Pd (14 W.u.) are somewhat low for two-phonon states. Generally, theE2 transition rates are reasonably well reproduced by the IBA-2 and by the boson-expansion description. The intruding 0 2 + state (t1/2=14.3 ns) in102Pd is connected to the 22/+ and 2 3 + states via strong E2 transitions: B(E2; 0 2 + → 2 2 + )=96±40 W.u.; B(E2; 2 3 + → 0 2 + =17±11 W.u.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01294586

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Digitale Medien

Properties of the 13/2+ isomeric decay in201Hg (1990)

Lönnroth, T. ; Ahonen, P. ; Julin, R. ; [weitere]

Springer

The European physical journal 337 (1990), S. 11-14

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ISSN: 1434-601X

Schlagwort(e): 21.10.-k ; 23.20.Ck ; 23.20.Lv

Quelle: Springer Online Journal Archives 1860-2000

Thema: Physik

Notizen: Abstract The isomeric decay of theT 1/2=94 us isomeric state in201Hg was studied in beam via the reaction198Pt(α, n). Gamma-ray and conversion-electron spectra were recorded. From the conversion coefficients, the multipolarities of the two depopulating transitions were determined to beM 2 + 10%E 3 andE 2, respectively. These assignments give the depopulating transitions to be 13/2+ → 9/2− and 9/2− → 5/2−, and these thus substantiate the previous suggestion that the isomeric state hasJ π=13/2+. For the 13/2+ → 9/2− M 2 transition a detailed study ofE 3 andM 4 admixed amplitudes was done. The microscopic properties of the 13/2+ and 9/2− states are discussed, and a comparison to the corresponding ones in199,203,205Hg is made.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01283932

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