Zobrazeno 1 - 10
of 127
pro vyhledávání: '"R. Piepenbring"'
Autor:
J. C. Durand, R. Piepenbring
Publikováno v:
Physical Review C. 54:189-200
The \ensuremath{\gamma} vibrational states in odd-mass deformed nuclei are studied within the multiphonon method. Special attention is paid to low-energy multiphonon states in order to see if the anharmonicities observed in even-even nuclei, in which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::133e67ba87afad5099fc928f5c85fb67
https://doi.org/10.1103/physrevc.54.189
https://doi.org/10.1103/physrevc.54.189
Autor:
W.R. Phillips, I. Ahmad, B. J. Varley, R. Piepenbring, A. G. Smith, W. Urban, Matthew Jones, M. Bentaleb, A. Guessous, L. R. Morss, N. Schulz, M. J. Leddy, John Durell, E. Lubkiewicz
Publikováno v:
Physical Review Letters. 75:2280-2283
The neutron-rich ${}^{106}$Mo nucleus has been studied by prompt \ensuremath{\gamma}-ray spectroscopy following the spontaneous fission of ${}^{248}$Cm. The characteristics of the rotational band built on a state at 1435 keV identifies the band head
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5634466f714c6a76334013417b5fe04
https://doi.org/10.1103/physrevlett.75.2280
https://doi.org/10.1103/physrevlett.75.2280
Publikováno v:
Nuclear Physics A. 586:396-412
The multiphonon method, previously developed for deformed nuclei is extended to the case of even-even spherical nuclei. Recursion formulae, well suited for numerical calculations are given for the overlap matrix elements. The method is illustrated fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d030caaa68e91b098f5906a64a102f1
https://doi.org/10.1016/0375-9474(94)00803-u
https://doi.org/10.1016/0375-9474(94)00803-u
Publikováno v:
Nuclear Physics A. 586:413-426
Matrix elements of one and two body operators, which appear in a general hamiltonian and in electromagnetic transitions are derived in a subspace spanned by multiphonon states. The method is illustrated for a single j -shell, where phonons built with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0765c4b9e18955b99ad00de0027ef70b
https://doi.org/10.1016/0375-9474(94)00804-v
https://doi.org/10.1016/0375-9474(94)00804-v
Autor:
R Piepenbring, K V Protasov
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics
Journal of Physics G: Nuclear and Particle Physics, IOP Publishing, 1993, 19, pp.597-601
Journal of Physics G: Nuclear and Particle Physics, IOP Publishing, 1993, 19, pp.597-601
It is shown that a model of a superfluid Fermi liquid with triplet Cooper pairing in the case of strong spin-orbit coupling gives rise, for some superfluid phases, to the same rotational spectra of nuclei as the cranking model and/or a model of a var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::733273a83742d15d0f945dfc861072d0
https://doi.org/10.1088/0954-3899/19/4/014
https://doi.org/10.1088/0954-3899/19/4/014
Autor:
R. Piepenbring, K. V. Protasov
Publikováno v:
Zeitschrift f�r Physik A Hadrons and Nuclei. 347:27-35
The superfluid liquid model with triplet pairing is applied to the analysis of the superdeformed bands inA∼130–150 region. A two-parameter expression for theγ-transitions energies allows a description, good in the A∼150 region and rough for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12b1f21300c383b8534f061981cef00c
https://doi.org/10.1007/bf01301273
https://doi.org/10.1007/bf01301273
Autor:
R. Piepenbring, K. V. Protasov
Publikováno v:
Zeitschrift f�r Physik A Hadrons and Nuclei. 345:7-14
The triplet pairing model, which has been shown, in some cases, to be equivalent to the cranking and/or variable moment of inertia models, is used to describe the superdeformed bands inA∼190 region. The two-parameter expression for theγ-transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fdb2a92815f18bb078f055dd8a1c2a0
https://doi.org/10.1007/bf01290333
https://doi.org/10.1007/bf01290333
Autor:
J. Leandri, R. Piepenbring
Publikováno v:
Physics Letters B
Physics Letters B, Elsevier, 1991, 267, pp.17-22
Physics Letters B, Elsevier, 1991, 267, pp.17-22
The problem of the origin of low-lying negative-parity states in the transitional nuclei of the Ba region is addressed via the microscopic treatment, on an equal footing, of Coriolis forces and octupole correlations. A numerical application to 124 Ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d376f307f1b07b15072f1908d6276cc2
https://doi.org/10.1016/0370-2693(91)90516-s
https://doi.org/10.1016/0370-2693(91)90516-s
Autor:
R. Piepenbring
Publikováno v:
Physical Review C
Physical Review C, American Physical Society, 1990, 42, pp.1453-1460. ⟨10.1103/PhysRevC.42.1453⟩
Physical Review C, American Physical Society, 1990, 42, pp.1453-1460. ⟨10.1103/PhysRevC.42.1453⟩
The multiphonon method previously developed for a system containing an even number of fermions is extended to the case where this number is odd. Recursion formulas well suited for realistic applications to odd-mass nuclei are given for overlaps and m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1c5c93da294b1daa3a62a7c06649d80
https://doi.org/10.1103/physrevc.42.1453
https://doi.org/10.1103/physrevc.42.1453
Autor:
M.K. Jammari, R. Piepenbring
Publikováno v:
Nuclear Physics A. 510:339-345
The μ = 2 part of the hexadecapole force is introduced in the multiphonon method. Special emphasis is put on the anharmonicities of the γ-vibrations in 168 Er. The isoscalar hexadecapole transition strengths to the states I = 4 at 995 and 2055 keV
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::86a1be22447ccaee0ea2fad205c90959
https://doi.org/10.1016/0375-9474(90)90243-f
https://doi.org/10.1016/0375-9474(90)90243-f