RT Journal Article
T1 B(E2; 2_(1)^(+) → 0_(1)^(+)) value in Kr^(90)
A1 Fraile Prieto, Luis Mario
A1 Mach, H.
A1 Paziy, V.
A1 Olaizola, B.
A1 Vedia, V.
AB A smooth onset of collectivity in Kr^(88,92,94,96) has been determined from reported B(E2; 2_(1)^(+) → 0_(1)^(+)) and E(2+ 1 ) values. This is in contrast to the sudden onset in even-even Zr, Mo, and Sr isotopes. Our objective was to complete the systematics by determining the B(E2; 2+ 1 → 0+ 1 ) value in Kr^(90), which was produced by cold-neutron-induced fission of 235U. The lifetime of the 2+ 1 state in Kr^(90) was measured via the electronic γ -γ timing technique using the EXILL and FATIMA spectrometers. Based on the measured mean lifetime of τ = 15(10) ps, the B(E2; 2_(1)^(+) → 0_(1)^(+)) value of 13^(+26)_(−5) W.u. in Kr^(90) is determined for the first time and the smooth onset of deformation in the even-even Kr isotopes beyond neutron number N = 50 is confirmed.
PB Amer Physical Soc
SN 0556-2813
YR 2014
FD 2014-12-01
LK https://hdl.handle.net/20.500.14352/33924
UL https://hdl.handle.net/20.500.14352/33924
LA eng
NO [1] P. Federmann and S. Pittel, Phys. Lett. B 69, 385 (1977). [2] J. Eberth, R. A. Meyer, and K. Sistemich, Nuclear Structure of the Zr Region (Springer, Berlin, 1988). [3] G. Lhersonneau et al., Z. Phys. A 330, 347 (1988). [4] M. Hotchkis et al., Phys. Rev. Lett. 64, 3123 (1990). [5] W. Urban et al., Eur. Phys. J. A 22, 241 (2004). [6] L. Bettermann et al., Phys. Rev. C 82, 044310 (2010). [7] K. L. G. Heyde and J. L. Wood, Rev. Mod. Phys. 83, 1467 (2010). [8] T. Thomas et al., Phys. Rev. C 88, 044305 (2013). [9] D. Mücher et al., Prog. Nucl. Part. Phys. 59, 361 (2007). [10] M. Albers et al., Phys. Rev. Lett. 108, 062701 (2012). [11] M. Albers et al., Nucl. Phys. A 899, 1 (2013). [12] S. Naimi et al., Phys. Rev. Lett. 105, 032502 (2010). [13] M. Keim et al., Nucl. Phys. A 586, 219 (1995). [14] J.-M. Régis et al., Nucl. Instrum. Methods Phys. Res. A 763, 210 (2014). [15] J.-M. Régis et al., Nucl. Instrum. Methods Phys. Res. A 726, 191 (2013). [16] H. Abele et al., Nucl. Instrum. Methods Phys. Res. A 562, 407 (2006). [17] W. Urban et al., JINST 8, P03014 (2013). [18] J. Simpson et al., Acta Physica Hungarica New Series, Heavy Ion Physics 11, 159 (2000).[19] P. Hoff et al., Z. Phys. A 300, 289 (1981). [20] T. J. Mertzimekis et al., Phys. Rev. C 64, 024314 (2001). [21] D. Mücher, Ph.D. thesis, University of Cologne, 2009.
NO © 2014 American Physical Society. Artículo firmado por 49 autores. This work was supported by NuPNET and the German BMBF by contracts no. 05P12PKNUF and 05P12DRNUP, the Spanish MINECO via projects no. FPA2010-17142, CPAN (CSD 2007-00042), and PRI-PIMNUP-2011-1338 within the ERA-NET NuPNET call for translational joint activities, the UK STFC by contract no. DNC7RP01/4 and the UK National Measurement Office. The EXILL and FATIMA campaign would not have been possible without the support of several services at the ILL and the LPSC. We are grateful to the EXOGAM collaboration for the loan of the detectors, to GANIL for assistance during installation and dismantling, and to the FATIMA collaboration for the provision of LaBr3(Ce) detectors and analog electronics.
NO NuPNET
NO German BMBF
NO Spanish MINECO
NO CPAN
NO PRI-PIMNUP
NO UK STFC
NO UK National Measurement Office
DS Docta Complutense
RD 28 abr 2024