Edward Paul - Academia.edu (original) (raw)
Papers by Edward Paul
The discovery of the new proton emitter 1165˜7^{116}_{~57}1165˜7La$_{59}$, 23 neutrons away from the only s... more The discovery of the new proton emitter 1165˜7^{116}_{~57}1165˜7La$_{59}$, 23 neutrons away from the only stable La isotope, 1395˜7^{139}_{~57}1395˜7La$_{82}$, is reported. The 116^{116}116La nuclei were synthesised in the fusion-evaporation reaction 58^{58}58Ni($^{64}$Zn, p4n)$^{116}$La and identified via their proton radioactivity using the MARA mass spectrometer and the silicon detectors placed at its focal plane. Comparisons of the measured proton energy ($E_{p} = 718 \pm 9 $ keV) and half-life ($T_{1/2} = 50 \pm 22$ ms) with values calculated using %microscopic nuclear barrier penetration theory the Universal Decay Law approach indicate that the proton is emitted with an orbital angular momentum l=2l=2l=2 and that its emission probability is enhanced relative to its closest, less exotic, odd-even lanthanum isotope ($^{117}_{~57}$La$_{60}$) while the proton-emission QQQ-value is lower. We propose this to be a signature for the presence of strong neutron-proton pair correlations in this exotic, neutron defici...
Acta Physica Hungarica A) Heavy Ion Physics, 1997
ABSTRACT Four superdeformed bands have been assigned to130Ce following a high-statistics γ-ray st... more ABSTRACT Four superdeformed bands have been assigned to130Ce following a high-statistics γ-ray study using theEurogam II spectrometer. The strongest band exhibits two distinct backbends which, in one scenario, may be interpreted as crossings between high-j N=6 neutron orbitals (vi 13/2) and low-j N=4 orbitals (vd 3/2) in an unpaired system.
1^{1}1 C. J. Humphreys and E. Paul, JR., J. phys. radium 19, 424 (1958) also NAVORD Reports 4636 ... more $^{1}$ C. J. Humphreys and E. Paul, JR., J. phys. radium 19, 424 (1958) also NAVORD Reports 4636 and 5933 Program of USA. New York, N.V., April.1959.
Journal of the American Chemical Society, 1964
AIP Conference Proceedings, 1999
ABSTRACT Three long, strongly coupled (I=1) sequences have been identified in {sup 110,112}Te by ... more ABSTRACT Three long, strongly coupled (I=1) sequences have been identified in {sup 110,112}Te by using the GAMMASPHERE array in conjunction with the MICROBALL charged-particle array. These bands are interpreted in terms of deformed proton 1-particle-1-hole bands that reach termination at I40(/2). This is the first observation of such collective dipole structures in this mass region. In contrast, many shorter dipole sequences have been associated with weakly deformed structures that generate angular momentum by the shears mechanism (magnetic rotation)
AIP Conference Proceedings, 1999
Lifetime measurements of states in the yrast band of 119Xe have been performed using a Doppler br... more Lifetime measurements of states in the yrast band of 119Xe have been performed using a Doppler broadened lineshape analysis. Preliminary results, in the range 27/2-<=Ipi<=43/2-, indicate a transition quadrupole moment of approximately 2.9 eb, which corresponds to a prolate rotor with deformation ε2~0.17.
AIP Conference Proceedings, 1999
The systematics of smoothly terminating rotational bands based on proton 2p-2h excitations in the... more The systematics of smoothly terminating rotational bands based on proton 2p-2h excitations in the A=110 mass region are presented. Terminating bands (or nearly so) based on this proton excitation have been found in nuclei ranging from 107In, up to 114Te, and possibly extending to 54Xe nuclei. The impressive agreement between experimental data and theoretical calculations is also presented. However, recently discovered structures based on proton 1p-1h excitations begin to show disagreement with theoretical calculations. These new bands are also discussed. The current and future directions of research into smooth band termination will be presented.
Journal of Physics: Conference Series, 2014
ABSTRACT Detailed band structures of three chiral-candidate nuclei, 134Pr, 132La and 103Rh have b... more ABSTRACT Detailed band structures of three chiral-candidate nuclei, 134Pr, 132La and 103Rh have been studied. The aim of the study was twofold. First, to try to explore the reasons behind the contradiction between the theoretically predicted chirality in these nuclei and the recently observed fingerprints that suggest non-chiral interpretation for the previous chiral candidate band doublets. Second, to search for multiple chiral bands of different types in these nuclei. In 134Pr a new πh11/2vh11/2 band has been observed besides the previously known chiral-candidate πh11/2vh11/2 doublet. This new band and the yrare πh11/2vh11/2 band show the expected features of a chiral doublet structure. This fact combined with the observed similarity between the band structures of 134Pr and 132La suggests that chirality might exist in these nuclei. The detailed study of the 103Rh band structure resulted in the observation of two new chiral-doublet looking structures besides the previously known one. This is indicative of possible existence of multiple chiral doublet structure in this nucleus.
Journal of the Optical Society of America, 1959
Journal of the Optical Society of America, 1971
Journal of the Optical Society of America, 1970
AIP Conference Proceedings, 1992
ABSTRACT
Journal de Physique et le Radium, 1958
Journal of the American Chemical Society, 1964
... 11. Chemical Shift Data for the Alkanes BY DAVID GRANT AND EDWARD G. PAUL RECEIVED JAXUARY 2,... more ... 11. Chemical Shift Data for the Alkanes BY DAVID GRANT AND EDWARD G. PAUL RECEIVED JAXUARY 2, 1964 Carbon-13 chemical shift data for the linear alkanes up to n-decane and all the branched paraffins through the hexanes are given. ...
1^{1}1 K. Narahari Rao, Curtis J. Humphreys, and D. H. Rank, Wavelength Standards In The Infrared... more $^{1}$ K. Narahari Rao, Curtis J. Humphreys, and D. H. Rank, Wavelength Standards In The Infrared (Academic Press, Inc., 1966).
The discovery of the new proton emitter 1165˜7^{116}_{~57}1165˜7La$_{59}$, 23 neutrons away from the only s... more The discovery of the new proton emitter 1165˜7^{116}_{~57}1165˜7La$_{59}$, 23 neutrons away from the only stable La isotope, 1395˜7^{139}_{~57}1395˜7La$_{82}$, is reported. The 116^{116}116La nuclei were synthesised in the fusion-evaporation reaction 58^{58}58Ni($^{64}$Zn, p4n)$^{116}$La and identified via their proton radioactivity using the MARA mass spectrometer and the silicon detectors placed at its focal plane. Comparisons of the measured proton energy ($E_{p} = 718 \pm 9 $ keV) and half-life ($T_{1/2} = 50 \pm 22$ ms) with values calculated using %microscopic nuclear barrier penetration theory the Universal Decay Law approach indicate that the proton is emitted with an orbital angular momentum l=2l=2l=2 and that its emission probability is enhanced relative to its closest, less exotic, odd-even lanthanum isotope ($^{117}_{~57}$La$_{60}$) while the proton-emission QQQ-value is lower. We propose this to be a signature for the presence of strong neutron-proton pair correlations in this exotic, neutron defici...
Acta Physica Hungarica A) Heavy Ion Physics, 1997
ABSTRACT Four superdeformed bands have been assigned to130Ce following a high-statistics γ-ray st... more ABSTRACT Four superdeformed bands have been assigned to130Ce following a high-statistics γ-ray study using theEurogam II spectrometer. The strongest band exhibits two distinct backbends which, in one scenario, may be interpreted as crossings between high-j N=6 neutron orbitals (vi 13/2) and low-j N=4 orbitals (vd 3/2) in an unpaired system.
1^{1}1 C. J. Humphreys and E. Paul, JR., J. phys. radium 19, 424 (1958) also NAVORD Reports 4636 ... more $^{1}$ C. J. Humphreys and E. Paul, JR., J. phys. radium 19, 424 (1958) also NAVORD Reports 4636 and 5933 Program of USA. New York, N.V., April.1959.
Journal of the American Chemical Society, 1964
AIP Conference Proceedings, 1999
ABSTRACT Three long, strongly coupled (I=1) sequences have been identified in {sup 110,112}Te by ... more ABSTRACT Three long, strongly coupled (I=1) sequences have been identified in {sup 110,112}Te by using the GAMMASPHERE array in conjunction with the MICROBALL charged-particle array. These bands are interpreted in terms of deformed proton 1-particle-1-hole bands that reach termination at I40(/2). This is the first observation of such collective dipole structures in this mass region. In contrast, many shorter dipole sequences have been associated with weakly deformed structures that generate angular momentum by the shears mechanism (magnetic rotation)
AIP Conference Proceedings, 1999
Lifetime measurements of states in the yrast band of 119Xe have been performed using a Doppler br... more Lifetime measurements of states in the yrast band of 119Xe have been performed using a Doppler broadened lineshape analysis. Preliminary results, in the range 27/2-<=Ipi<=43/2-, indicate a transition quadrupole moment of approximately 2.9 eb, which corresponds to a prolate rotor with deformation ε2~0.17.
AIP Conference Proceedings, 1999
The systematics of smoothly terminating rotational bands based on proton 2p-2h excitations in the... more The systematics of smoothly terminating rotational bands based on proton 2p-2h excitations in the A=110 mass region are presented. Terminating bands (or nearly so) based on this proton excitation have been found in nuclei ranging from 107In, up to 114Te, and possibly extending to 54Xe nuclei. The impressive agreement between experimental data and theoretical calculations is also presented. However, recently discovered structures based on proton 1p-1h excitations begin to show disagreement with theoretical calculations. These new bands are also discussed. The current and future directions of research into smooth band termination will be presented.
Journal of Physics: Conference Series, 2014
ABSTRACT Detailed band structures of three chiral-candidate nuclei, 134Pr, 132La and 103Rh have b... more ABSTRACT Detailed band structures of three chiral-candidate nuclei, 134Pr, 132La and 103Rh have been studied. The aim of the study was twofold. First, to try to explore the reasons behind the contradiction between the theoretically predicted chirality in these nuclei and the recently observed fingerprints that suggest non-chiral interpretation for the previous chiral candidate band doublets. Second, to search for multiple chiral bands of different types in these nuclei. In 134Pr a new πh11/2vh11/2 band has been observed besides the previously known chiral-candidate πh11/2vh11/2 doublet. This new band and the yrare πh11/2vh11/2 band show the expected features of a chiral doublet structure. This fact combined with the observed similarity between the band structures of 134Pr and 132La suggests that chirality might exist in these nuclei. The detailed study of the 103Rh band structure resulted in the observation of two new chiral-doublet looking structures besides the previously known one. This is indicative of possible existence of multiple chiral doublet structure in this nucleus.
Journal of the Optical Society of America, 1959
Journal of the Optical Society of America, 1971
Journal of the Optical Society of America, 1970
AIP Conference Proceedings, 1992
ABSTRACT
Journal de Physique et le Radium, 1958
Journal of the American Chemical Society, 1964
... 11. Chemical Shift Data for the Alkanes BY DAVID GRANT AND EDWARD G. PAUL RECEIVED JAXUARY 2,... more ... 11. Chemical Shift Data for the Alkanes BY DAVID GRANT AND EDWARD G. PAUL RECEIVED JAXUARY 2, 1964 Carbon-13 chemical shift data for the linear alkanes up to n-decane and all the branched paraffins through the hexanes are given. ...
1^{1}1 K. Narahari Rao, Curtis J. Humphreys, and D. H. Rank, Wavelength Standards In The Infrared... more $^{1}$ K. Narahari Rao, Curtis J. Humphreys, and D. H. Rank, Wavelength Standards In The Infrared (Academic Press, Inc., 1966).