29 Result(s)

Article

Mirror-symmetry violation in bound nuclear ground states

Conservation laws are deeply related to any symmetry present in a physical system^1,2. Analogously to electrons in atoms exhibiting spin symmetries³, it is possible to consider neutrons and protons in the atomic n...

D. E. M. Hoff, A. M. Rogers, S. M. Wang, P. C. Bender, K. Brandenburg… in Nature (2020)

Article

Structure of rotational bands in ²⁵³No

In-beam gamma-ray and conversion electron spectroscopic studies have been performed on the ²⁵³ No nucleus. A strongly coupled rotational band has been identified and the improved statistic...

R. -D. Herzberg, S. Moon, S. Eeckhaudt, P. T. Greenlees… in The European Physical Journal A (2009)

Article

Recoil Beta Tagging: Application to the study of odd-odd near proton drip line nuclei, ⁷⁴Rb and ⁷⁸Y

We present a study of low-spin states in ⁷⁴Rb and ⁷⁸Y using the new technique of Recoil Beta Tagging. This yielded new information on ⁷⁴Rb and has provided the first evidence for non-isomeric T= 1 states in ⁷⁸Y. ...

B. S. Nara Singh, A. N. Steer, D. G. Jenkins… in The European Physical Journal Special Topi… (2007)

Article

Coulomb excitation of the ^242m Am isomer

The ^242m Am isomer, a well-known candidate for photodepopulation research, has been studied in this first ever Coulomb excitation of a nearly pure (≈98%) isomer target. Thirty new states, includin...

A. B. Hayes, D. Cline, K. J. Moody, C. Y. Wu, J. A. Becker… in Laser Physics (2007)

Article

Experiment aimed at the study of ²⁵²Cf binary and ternary fission

A new experiment devoted to the fission of ²⁵²Cf is described. It continued a series of our experiments based on correlation measurements of γ rays emitted by fission fragment pairs. The measurements of γ-γ and γ...

A. V. Daniel, J. H. Hamilton, A. V. Ramayya, A. S. Fomichev… in Physics of Atomic Nuclei (2006)

Article

Recoil-fission tagging of the transfermium nucleus ²⁵²No

An in-beam study of the transfermium nucleus ²⁵²No has been performed using the JUROSPHERE II array of germanium detectors coupled to the gas-filled recoil separator RITU. A new technique of recoil-fission taggin...

A. -P. Leppänen, J. Uusitalo… in The European Physical Journal A - Hadrons … (2006)

Chapter and Conference Paper

Re-evaluating reaction rates relevant to nova nucleosynthesis from a nuclear structure perspective

Conventionally, reaction rates relevant to nova nucleosynthesis are determined by performing the relevant proton capture reactions directly for stable species, or as has become possible more recently in invers...

D. G. Jenkins, C. J. Lister… in The 2nd International Conference on Nuclea… (2006)

Article

K-Mixing and fast decay of a seven-quasiparticle isomer in ¹⁷⁹Ta

A seven-quasiparticle isomer with \(K^{\pi} = (49 /2^ + )\) and T _1/2 = 53 ( ^{+ 3} _-7) ns...

F. G. Kondev, G. D. Dracoulis, G. J. Lane… in The European Physical Journal A - Hadrons … (2004)

Article

High-spin structure of \(N\simeq Z\) nuclei around the A = 72 region

High-spin states have been studied in ⁷²Kr and ⁷²Br using the ⁴⁰ Ca + ⁴⁰ Ca and ³⁶ Ar + ⁴⁰ Ca reactions at 164 and 1...

N. S. Kelsall, C. E. Svensson, S. Fischer… in The European Physical Journal A - Hadrons … (2003)

Chapter and Conference Paper

Rotational bands in the proton emitters ¹³¹Eu and ¹⁴¹Ho

Proton-decay studies led in recent years to the observation of about 20 new proton emitters. Among others, first two cases of highly deformed proton emitters, namely ¹³¹Eu and ¹⁴¹Ho, were reported [1]. Also, the ...

D. Seweryniak, P. J. Woods, J. J. Ressler, C. N. Davids… in Exotic Nuclei and Atomic Masses (2003)

Chapter and Conference Paper

In-beam spectroscopy of ^253,254No

In-beam conversion electron spectroscopy experiments have been performed on the transfermium nuclei ^253,254No using the conversion electron spectrometer SACRED in nearly collinear geometry in conjunction with the...

R.-D. Herzberg, N. Amzal, J. E. Bastin, F. Becker… in Exotic Nuclei and Atomic Masses (2003)

Article

Mirror symmetry and Coulomb effects in light N≈Z nuclei

In this overview, some latest results from gamma-ray spectroscopic studies of high spin states of isobaric multiplets will be presented. An experimental programme is underway to examine exited states of isobar...

M. A. Bentley, S. J. Williams, D. T. Joss, C. D. O'Leary… in Czechoslovak Journal of Physics (2002)

Article

Study of ¹⁶⁹Hf at high rotational frequency

High-spin properties of the nucleus ¹⁶⁹Hf have been studied through the fusion evaporation reaction ⁹⁶Zr(⁷⁶Ge,3n)¹⁶⁹Hf at a beam energy of 310 MeV. The known rotational bands have been extended considerably and 6...

K.A. Schmidt, M. Bergström, G.B. Hagemann… in The European Physical Journal A - Hadrons … (2001)

Chapter

Gamma-Ray Array Physics

The fusion of heavy ions at near-barrier energies offers the prospect of producing and studying a wide variety of exotic nuclear states with unusual angular momentum, isospin, and mass. However, a revolution i...

C. J. Lister in The Nucleus (1999)

Article

The positron-electron peak puzzle: results from APEX

I. Ahmad, S.M. Austin, B.B. Back, R.R. Betts… in Zeitschrift für Physik A Hadrons and nuclei (1997)

Article

Search for octupole deformation in neutron-rich Xe isotopes

A search for octupole deformation in neutron-rich Xe isotopes has been conducted through prompt gammaray spectroscopy of secondary fragments produced in the spontaneous fission of²⁴⁸Cm. The spectrometer consisted...

M. Bentaleb, N. Schulz, E. Lubkiewicz… in Zeitschrift für Physik A Hadrons and Nuclei (1996)

Chapter

Apex and the e ⁺/e ⁻ Puzzle: Recent Results

Narrow structures first reported in positron singles energy spectra ^{[1, 2, 3, 4, 5, 6, 7]} and later in electron-positron energy distributions ^{[5, 8, 9, 10, 11, 12]} associated with collisions of very heavy ions ne...

I. Ahmad, S. M. Austin, B. B. Back, R. R. Betts… in Advances in Nuclear Dynamics 2 (1996)

Article

High-spin states in the neutron rich fission fragments¹³⁸Xe and¹³⁹Xe

High-spin structures in the neutron-rich nuclei^138Xe and¹³⁹Xe have been investigated by observing prompt γ -rays from the spontaneous fission of²⁴⁸Cm with the Eurogam spectrometer. The partial level schemes were ...

M. Bentaleb, E. Lubkiewicz, N. Schulz… in Zeitschrift für Physik A Hadrons and Nuclei (1994)

Article

Heavy-ion in-beam studies of the nucleus⁸⁷Nb

High spin states in the transitional nucleus⁸⁷Nb up to 14 MeV excitation have been established for the first time via the reactions⁴⁰Ca(⁵⁰Cr, 3p)⁸⁷Nb and⁵⁸Ni (³²S, 3p)⁸⁷Nb. The⁸⁷Nbγ-radiations have been identifie...

A. Jungclaus, K. P. Lieb, C. J. Gross… in Zeitschrift für Physik A Hadrons and Nuclei (1991)