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558 results on '"Ketelhut S"'

1. Sportmedizin im Wandel

Author

Ketelhut SR, Ketelhut S, Riedel S, Willich S, Meyer-Sabellek W, Müssig K, and Ketelhut K

Subjects
Sports medicine, RC1200-1245
Abstract

Objective: Assessment of heart rate variability (HRV) is increasingly used to evaluate dynamic features of cardiovascular (cv) control mechanisms and offers a unique insight into autonomic cv modulation in health and diseases. Regular exercise is known to positively influence hemodynamics and various cv risk factors. The present study aimed to evaluate the efficacy of a nine-month moderate interval-training program on HRV in elementary school children.Methods: 68 students (aged 8.60.5 years, 49% girls, BMI 17.92.5kg/m2), were randomized into intervention (IG) (n=34) and control (KG) (n=34) groups. Both IG and KG had regular physical education classes (PE) (3x45min/week). During a nine-month intervention period IG,received an additional exercise intervention program (2x45min/week). Time and frequency domain measures of HRV were obtained before and after the intervention program.Results: In contrast to KG, IG showed positive modifications of HRV parameters. After the intervention, High FrequencyPower (HF-Power) increased by 7.5% (p

Published
2017
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2. SPectrometer for Internal Conversion Electrons (SPICE) at TRIUMF-ISAC

Author

Smallcombe J., Moukaddam M., Evitts L. J., Garnsworthy A. B., Hallam S., Andreoiu C., Ball G. C., Bolton C., Caballero-Folch R., Constable M., Cross D. S., Garrett P. E., Hackman G., Henderson J., Henderson R., Ketelhut S., Kruecken R., Kurchaninov L., Park J., Pore J. L., Rand E. T., Ruotsalainen P., Smith J. K., Svensson C. E., and Williams M.

Subjects
Physics, QC1-999
Abstract

A new ancillary detector, SPICE (SPectrometer for Internal Conversion Electrons) has been constructed and recently commissioned for use with radioactive ion beams at the TRIUMF-ISAC II facility. SPICE is designed to be operated in conjunction with the TIGRESS High-Purity Germanium (HPGe) spectrometer to perform combined in-beam γ-ray and internal-conversion-electron spectroscopy. The main feature of SPICE is high effciency over a wide range of electron energies from 100 to 3500 keV, with an effective reduction of beam-induced backgrounds. SPICE will be a powerful tool to measure conversion coeffcients and E0 transitions in atomic nuclei. A recent in-beam commissioning experiment demonstrates the effectiveness of the basic design concept of SPICE in background suppression.

Published
2016
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3. Spectroscopy of 193Bi

Author

Herzáň A., Juutinen S., Grahn T., Greenlees P.T., Hauschild K., Jakobsson U., Jones P., Julin R., Ketelhut S., Leino M., Lopez-Martens A., Nieminen P., Nyman M., Peura P., Rahkila P., Rinta-Antila S., Ruotsalainen P., Sandzelius M., Sarén J., Scholey C., Sorri J., and Uusitalo J.

Subjects
Physics, QC1-999
Abstract

An experiment aiming to study the shape coexistence in 193Bi has been performed at the Accelerator laboratory of the University of Jyväskylä, Finland (JYFL). Many new states have been found, hugely extending the previously known level scheme of 193Bi. The Iπ=292+${I^\pi } = {{{29} \over 2}^ + }$ member of the πi13/2 band de-excites also to the previously, only tentatively placed long-lived isomeric state. This link determines the energy of the isomeric state to be 2260(1) keV and suggests a spin and parity of (272+)$\left( {{{{{27} \over 2}}^ + }} \right)$. The half-life of the isomeric state was measured to be 84.4(6) µs. A level structure on top of this isomeric state was constructed. However, transition directly depopulating this state could not be identified. A superdeformed band almost identical to that present in the neighboring isotope 191Bi has been identified.

Published
2014
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4. High-Precision Half-life Measurements for the Superallowed β+ Emitter 14O

Author

Laffoley A. T., Svensson C. E., Andreoiu C., Austin R. A. E., Ball G. C., Blank B., Bouzomita H., Cross D. S., Diaz Varela A., Dunlop R., Finlay P., Garnsworthy A. B., Garrett P. E., Giovinazzo J., Grinyer G. F., Hackman G., Hadinia B., Jamieson D. S., Ketelhut S., Leach K. G., Leslie J. R., Tardiff E. R., Thomas J. C., and Unsworth C.

Subjects
Physics, QC1-999
Abstract

The half-life of 14O, a superallowed Fermi β+ emitter, has been determined via simultaneous γ and β counting experiments at TRIUMF’s Isotope Separator and Accelerator facility. Following the implantation of 14O samples at the center of the 8π spectrometer, a γ counting measurement was performed by detecting the 2313 keV γ-rays emitted from the first excited state of the daughter 14N using 20 high-purity germanium (HPGe) detectors. A simultaneous β counting experiment was performed using a fast plastic scintillator positioned directly behind the implantation site. The results, T½(γ) = 70:632 ± 0:094 s and T½(β) = 70:610 ± 0:030 s, are consistent with one another and, together with eight previous measurements, establish a new average for the 14O half-life of T½ = 70:619 ± 0:011 s with a reduced χ2 of 0.99.

Published
2014
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5. High-precision half-life and branching-ratio measurements for superallowed Fermi β+ emitters at TRIUMF – ISAC

Author

Laffoley A. T., Dunlop R., Finlay P., Grinyer G. F., Andreoiu C., Austin R. A. E., Ball G. C., Bandyopadhyay D., Blank B., Bouzomita H., Chagnon-Lessard S., Chester A., Cross D. S., Demand G., Diaz Varela A., Djongolov M., Ettenauer S., Garnsworthy A. B., Garrett P. E., Giovinazzo J., Glister J., Green K. L., Hackman G., Hadinia B., Jamieson D. S., Ketelhut S., Leach K. G., Leslie J. R., Pearson C. J., Phillips A. A., Rand E. T., Starosta K., Sumithrarachchi C. S., Svensson C. E., Tardiff E. R., Thomas J. C., Towner I. S., Triambak S., Unsworth C., Williams S. J., Wong J., Yates S. W., and Zganjar E. F.

Subjects
Physics, QC1-999
Abstract

A program of high-precision half-life and branching-ratio measurements for superallowed Fermi β emitters is being carried out at TRIUMF’s Isotope Separator and Accelerator (ISAC) radioactive ion beam facility. Recent half-life measurements for the superallowed decays of 14O, 18Ne, and 26Alm, as well as branching-ratio measurements for 26Alm and 74Rb are reported. These results provide demanding tests of the Standard Model and the theoretical isospin symmetry breaking (ISB) corrections in superallowed Fermi β decays.

Published
2014
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6. First candidates for {\gamma} vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes

Author

Majola, S. N. T., Sithole, M. A., Mdletshe, L., Hartley, D., Timar, J., Nyako, B. M., Allmond, J. M., Bark, R. A., Beausang, C., Bianco, L., Bucher, T. D., Bvumbi, S. P., Carpenter, M. P., Chiara, C. J., Cooper, N., Cullen, D. M., Curien, D., Dinoko, T. S., Gall, B. J. P., Garrett, P. E., Greenlees, P. T., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Kondev, F. G., Korichi, A., Kulp, W. D., Lauritsen, T., Lawrie, E. A., Makhathini, L., Masiteng, P. L., Maqabuka, B., Mccutchan, E. A., Miller, D., Miller, S., Minkova, A., Msebi, L., Mthembu, S. H., Ndayishimye, J., Nieminen, P., Ngcobo, P. Z., Ntshangase, S. S., Orce, J. N., Peura, P., Rahkila, P., Redon, N., Riedinger, L. L., Riley, M. A., Roux, D. G., Ruotsalainen, P., Piot, J., Saren, J., Sharpey-Schafer, J. F., Scholey, C., Shirinda, O., Simpson, J., Sorri, J., Stefanescu, I., Stolze, S., Uusitalo, J., Wang, X., Werner, V., Wood, J. L., Yu, C. H., Zhu, S., and Zimba, G.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the 155Gd({\alpha},2n)157Dy and 148Nd(12C, 5n)155Dy reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a K{\pi}= 2+ {\gamma} vibrational band, built on the [505]11/2- neutron orbital, in both odd-A 155, 157Dy isotopes. The coupling of the first excited K=0+ states or the so-called \b{eta} vibrational bands at 661 and 676 keV in 154Dy and 156Dy to the [505]11/2- orbital, to produce a K{\pi}=11/2- band, was not observed in both 155Dy and 157Dy, respectively. The implication of these findings on the interpretation of the first excited 0+ states in the core nuclei 154Dy and 156Dy are also discussed., Comment: Published in Physical Rev C

Published
2020
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7. Spectroscopy of low spin states in 157Dy: Search for evidence of enhanced octupole correlations

Author

Majola, S. N. T., Bark, R. A., Bianco, L., Bucher, T. D., Bvumbi, S. P., Cullen, D. M., Garrett, P. E., Greenlees, P. T., Hartley, D., Hirvonen, J, Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Korichi, A., Lawrie, E. A., Masiteng, P. L., Maqabuka, B., Mdletshe, L., Minkova, A., Ndayishimye, J., Nieminen, P., Newman, R., Nyako, B. M., Ntshangase, S. S., Peura, P., Rahkila, P., Riedinger, L. L., Riley, M., Roux, D., Ruotsalainen, P., Saren, J., Sharpey-Schafer, J. F., Scholey, C., Shirinda, O., Sithole, A., Sorri, J., Stolze, S., Timar, J., Uusitalo, J., and Zimba, G.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

Low-spin states of 157Dy have been studied using the JUROGAM II array, following the 155Gd ({\alpha}, 2n) reaction at a beam energy of 25 MeV. The level scheme of 157Dy has been expanded with four new bands. Rotational structures built on the [523]5/2- and [402]3/2+ neutron orbitals constitute new additions to the level scheme as do many of the inter- and intra-band transitions. This manuscript also reports the observation of cross I- to (I-1)- and I- to (I-1)+ E1 dipole transitions inter-linking structures built on the [523]5/2- (band 5) and [402]3/2+ (band 7) neutron orbitals. These interlacing band structures are interpreted as the bands of parity doublets with simplex quantum number s = -i related to possible octupole correlations., Comment: Published in Physical Review C (2019)

Published
2020
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8. Prompt gamma ray-spectroscopy of N = 50 fission fragments

Author

Drouet F., Simpson G.S., Vancraeyenest A., Gey G., Kessedjian G., Malkiewicz T., Ramdhane M., Sage C., Thiamova G., Grahn T., Greenlees P.T., Hauschild K., Herzan A., Jakobsson U., Jones P., Julin R., Juutinen S., Ketelhut S., Lopez-Martens A., Nieminen P., Peura P., Rahkila P., Rinta-Antila S., Ruotsalainen P., Sandzelius M., Saren J., Scholey C., Sorri J., and Uusitalo J.

Subjects
Physics, QC1-999
Abstract

Excited states in the nuclei 83As and 84,86Se have been studied via prompt γ-ray spectroscopy. The nuclei were produced by the proton-induced fission of a 238U target, at the accelerator of the University of Jyväskylä. The JUROGAM-II array was used to detect prompt γ-rays and a triple-γ coincidence analysis performed. A comparison of the N = 50 nuclei with shell-model calculations reproduces the low-lying states in 83As and 84Se well. The inclusion of particle-hole excitations is necessary to correctly describe the states above ∼ 3.5 MeV.

Published
2013
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9. The SPICE Detector at ISAC

Author

Garnsworthy A.B., Moukaddam M., Bolton C., Ketelhut S., Evitts L.J., Andreoiu C., Constable M., Hackman G., Henderson R., and Svensson C.E.

Subjects
Physics, QC1-999
Abstract

A new ancillary detector system for the TIGRESS HPGe array called SPectrometer for Internal Conversion Electrons (SPICE) is currently under development. SPICE consists of a segmented electron detector, photon shield and a permanent magnetic lens. SPICE will enable in-beam electron spectroscopy and, in coupling to the TIGRESS HPGe array, coincident gamma-electron spectroscopy with stable and radioactive beams.

Published
2013
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10. Prompt γ-ray spectroscopy of the neutron-rich 124Cd

Author

Vancraeyenest A., Simpson G.S., Gey G., Greenlees P.T., Drouet F., Kessedjian G., Malkiewicz T., Ramdhane M., Sage C., Thiamova G., Grahn T., Hauschild K., Herzan A., Jakobsson U., Jones P., Julin R., Juutinen S., Ketelhut S., Lopez-Martens A., Nieminen P., Peura P., Rahkila P., Rinta-Antila S., Ruotsalainen P., Sandzelius M., Saren J., Scholey C., Sorri J., and Uusitalo J.

Subjects
Physics, QC1-999
Abstract

Prompt γ-ray spectroscopy of neutron-rich cadmium isotopes has been performed. The nuclei of interest have been populated via a 25-MeV, proton-induced fission of the 238U thick target and prompt γ-rays measured using the multi-detector HPGe array JUROGAM II. New high-spin decays have been observed and placed in the level scheme using triple coincidence gates. The experimental results are compared to shell-model calculations and show good agreement.

Published
2013
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11. Reinvestigation of the excited states in the proton emitter $^{151}$Lu: particle-hole excitations across the $N=Z=64$ subshell

Author

Wang, F., Sun, B. H., Liu, Z., Qi, C., Zhu, L. H., Scholey, C., Ashley, S. F., Bianco, L., Cullen, D. M., Cullen, I. J., Darby, I. G., Eeckhaudt, S., Garnsworthy, A. B., Gelletly, W., Gomez-Hornillos, M. B., Grahn, T., Greenlees, P. T., Jenkins, D. G., Jones, G. A., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Khan, S., Kishada, A., Leino, M., Niikura, M., Nyman, M., Page, R. D., Pakarinen, J., Pietri, S., Podolyák, Zs., Rahkila, P., Rigby, S., Sarén, J., Shizuma, T., Sorri, J., Steer, S., Thomson, J., Thompson, N. J., Uusitalo, J., Walker, P. M., and Williams, S.

Subjects
Nuclear Experiment
Abstract

The excited states of the proton emitter $^{151}$Lu were reinvestigated in a recoil-decay tagging experiment at the Accelerator Laboratory of the University of Jyv\"askyl\"a (JYFL). The level scheme built on the ground state of $^{151}$Lu was updated with five new $\gamma$-ray transitions. Large-scale shell model calculations were carried out to interpret the experimental level scheme. It is found that the excitation energies of states above the $27/2^-$ and $23/2^+$ isomeric levels can be sensitive to excitations from $g_{7/2}$ and $d_{5/2}$ to single-particle orbitals above $N=Z=64$., Comment: 6 pages, 7 figures, 2 tables

Published
2017
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12. Spectroscopic factor and proton formation probability for the d3/2 proton emitter 151mLu

Author

Wang, F., Sun, B. H., Liu, Z., Page, R. D., Qi, C., Scholey, C., Ashley, S. F., Bianco, L., Cullen, I. J., Darby, I. G., Eeckhaudt, S., Garnsworthy, A. B., Gelletly, W., Gomez-Hornillos, M. B., Grahn, T., Greenlees, P. T., Jenkins, D. G., Jones, G. A., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Khan, S., Kishada, A., Leino, M., Niikura, M., Nyman, M., Pakarinen, J., Pietri, S., Podolyak, Z., Rahkila, P., Rigby, S., Saren, J., Shizuma, T., Sorri, J., Steer, S., Thomson, J., Thompson, N. J., Uusitalo, J., Walker, P. M., William, S., Zhang, H. F., Zhang, W. Q., and Zhu, L. H.

Subjects
Nuclear Experiment, Nuclear Theory
Abstract

The quenching of the experimental spectroscopic factor for proton emission from the short-lived $d_{3/2}$ isomeric state in $^{151m}$Lu was a long-standing problem. In the present work, proton emission from this isomer has been reinvestigated in an experiment at the Accelerator Laboratory of the University of Jyv\"{a}skyl\"{a}. The proton-decay energy and half-life of this isomer were measured to be 1295(5) keV and 15.4(8) $\mu$s, respectively, in agreement with another recent study. These new experimental data can resolve the discrepancy in the spectroscopic factor calculated using the spherical WKB approximation. Using the R-matrix approach it is found that the proton formation probability indicates no significant hindrance for the proton decay of $^{151m}$Lu., Comment: 6 pages, 5 figures

Published
2017
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13. Measurement of Lifetimes in 23Mg

Author

Kirsebom, O. S., Bender, P., Cheeseman, A., Christian, G., Churchman, R., Cross, D. S., Davids, B., Evitts, L. J., Fallis, J., Galinski, N., Garnsworthy, A. B., Hackman, G., Lighthall, J., Ketelhut, S., Machule, P., Miller, D., Nobs, C. R., Pearson, C. J., Rajabali, M. M., Radich, A. J., Rojas, A., Ruiz, C., Sanetullaev, A., Unsworth, C. D., and Wrede, C.

Subjects
Nuclear Experiment
Abstract

Several lifetimes in 23Mg have been determined for the first time using the Doppler-shift attenuation method. A Monte Carlo simulation code has been written to model the gamma-ray line shape. An upper limit of 12 fs at the 95% C.L. has been obtained for the astrophysically important 7787 keV state.

Published
2015
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14. Transition probability studies in ¹⁷⁵Au

Author

Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., Venhart, M., Grahn, T., Watkins, H., Joss, D. T., Page, R. D., Carroll, R. J., Dewald, A., Greenlees, P. T., Hackstein, M., Herzberg, R.-D., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kröll, Thorsten, Krücken, R., Labiche, M., Leino, M., Lumley, N., Maierbeck, P., Nyman, M., Nieminen, P., O'Donnell, D., Ollier, J., Pakarinen, J., Peura, P., Pissulla, Th., Rahkila, P., Revill, J. P., Rother, W., Ruotsalainen, P., Rigby, S. V., Sarén, J., Sapple, P. J., Scheck, M., Scholey, C., Simpson, J., Sorri, J., Uusitalo, J., and Venhart, M.

Abstract

Transition probabilities have been measured between the low-lying yrast states in ¹⁷⁵Au by employing the recoil distance Doppler-shift method combined with the selective recoil-decay tagging technique. Reduced transition probabilities and magnitudes of transition quadrupole moments have been extracted from measured lifetimes allowing dramatic changes in nuclear structure within a low excitation-energy range to probed. The transition quadrupole moment data are discussed in terms of available systematics as a function of atomic number and aligned angular momentum.

Published
2024

17. Characterizing the atomic mass surface beyond the proton drip line via a-decay measurements of the s1/2 ground state of 165Re and the h11/2 isomer in 161Ta

Author

O'Donnell, D., Page, R. D., Scholey, C., Bianco, L., Capponi, L., Carroll, R. J., Darby, I. G., Donosa, L., Drummond, M., Ertugral, F., Greenlees, P. T., Grahn, T., Hauschild, K., Herzan, A., Jakobsson, U., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Labiche, M., Leino, M., Lopez-Martens, A., Mullholland, K., Nieminen, P., Peura, P., Rahkila, P., Rinta-Antila, S., Ruotsalainen, P., Sandzelius, M., Saren, J., Saygi, B., Simpson, J., Sorri, J., Thornthwaite, A., and Uusitalo, J.

Subjects
Nuclear Experiment
Abstract

The a-decay chains originating from the s1/2 and h11/2 states in 173Au have been investigated following fusion-evaporation reactions. Four generations of a radioactivities have been correlated with 173Aum leading to a measurement of the a decay of 161Tam. It has been found that the known a decay of 161Ta, which was previously associated with the decay of the ground state, is in fact the decay of an isomeric state. This work also reports on the first observation of prompt g rays feeding the ground state of 173Au. This prompt radiation was used to aid the study of the a-decay chain originating from the s1/2 state in 173Au. Three generations of a decays have been correlated with this state leading to the observation of a previously unreported activity which is assigned as the decay of 165Reg. This work also reports the excitation energy of an a-decaying isomer in 161Ta and the Q-value of the decay of 161Tag., Comment: 7 pages, 6 figures

Published
2012
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18. First observation of excited states in 173Hg

Author

O'Donnell, D., Page, R. D., Scholey, C., Bianco, L., Capponi, L., Carroll, R. J., Darby, I. G., Donosa, L., Drummond, M., Ertugral, F., Greenlees, P. T., Grahn, T., Hauschild, K., Herzan, A., Jakobsson, U., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Labiche, M., Leino, M., Lopez-Martens, A., Mullholland, K., Nieminen, P., Peura, P., Rahkila, P., Rinta-Antila, S., Ruotsalainen, P., Sandzelius, M., Saren, J., Saygi, B., Simpson, J., Sorri, J., Thornthwaite, A., and Uusitalo, J.

Subjects
Nuclear Experiment
Abstract

The neutron-deficient nucleus 173Hg has been studied following fusion-evaporation reactions. The observation of gamma rays decaying from excited states are reported for the first time and a tentative level scheme is proposed. The proposed level scheme is discussed within the context of the systematics of neighbouring neutron-deficient Hg nuclei. In addition to the gamma-ray spectroscopy, the alpha decay of this nucleus has been measured yielding superior precision to earlier measurements., Comment: 5 pages, 4 figures

Published
2012
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19. Shape coexistence at the proton drip-line: First identification of excited states in 180Pb

Author

Rahkila, P., Jenkins, D. G., Pakarinen, J., Gray-Jones, C., Greenlees, P. T., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Koivisto, H., Leino, M., Nieminen, P., Nyman, M., Papadakis, P., Paschalis, S., Petri, M., Peura, P., Roberts, O. J., Ropponen, T., Ruotsalainen, P., Saren, J., Scholey, C., Sorri, J., Tuff, A. G., Uusitalo, J., Wadsworth, R., Bender, M., and Heenen, P. -H.

Subjects
Nuclear Experiment
Abstract

Excited states in the extremely neutron-deficient nucleus, 180Pb, have been identified for the first time using the JUROGAM II array in conjunction with the RITU recoil separator at the Accelerator Laboratory of the University of Jyvaskyla. This study lies at the limit of what is presently achievable with in-beam spectroscopy, with an estimated cross-section of only 10 nb for the 92Mo(90Zr,2n)180Pb reaction. A continuation of the trend observed in 182Pb and 184Pb is seen, where the prolate minimum continues to rise beyond the N=104 mid-shell with respect to the spherical ground state. Beyond mean-field calculations are in reasonable correspondence with the trends deduced from experiment., Comment: 5 pages, 4 figures, submitted to Phys.Rev.C

Published
2010
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20. Search for Fingerprints of Tetrahedral Symmetry in $^{156}Gd$

Author

Doan, Q. T., Curien, D., Stezowski, O., Dudek, J., Mazurek, K., Gozdz, A., Piot, J., Duchene, G., Gall, B., Molique, H., Richet, M., Medina, P., Guinet, D., Redon, N., Schmitt, C., Jones, P., Julin, R., Peura, P., Ketelhut, S., Nyman, M., Jakobsson, U., Maj, A., Zuber, K., Bednarczyk, P., Schunck, N., Dobaczewski, J., Astier, A., Deloncle, I., Verney, D., De Angelis, G., and Gerl, J.

Subjects
Nuclear Experiment
Abstract

Theoretical predictions suggest the presence of tetrahedral symmetry as an explanation for the vanishing intra-band E2-transitions at the bottom of the odd-spin negative parity band in $^{156}Gd$. The present study reports on experiment performed to address this phenomenon. It allowed to determine the intra-band E2 transitions and branching ratios B(E2)/B(E1) of two of the negative-parity bands in $^{156}Gd$., Comment: presented by Q.T. Doan at XLII Zakopane School of Physics: Breaking Frontiers: Submicron Structures in Physics and Biology, May 2008. 5 pages, minor corrections. To be published in the proceedings

Published
2008

21. Study of excited states and observation of collective level structures in the odd–odd nucleus 194Bi

Author

Herzáň, A., Juutinen, S., Auranen, K., Grahn, T., Greenlees, P. T., Hauschild, K., Jakobsson, U., Julin, R., Ketelhut, S., Leino, M., Lopez-Martens, A., Lönnroth, T., Nieminen, P., Nyman, M., Partanen, J., Peura, P., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., Slotte, J. M. K., Sorri, J., Stolze, S., and Uusitalo, J.

Published
2020
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24. Evidence for octupole collectivity in 172Pt

Author

Ertoprak, A., Cederwall, B., Qi, C., Aktas, Ö., Doncel, M., Hadinia, B., Liotta, R., Sandzelius, M., Scholey, C., Andgren, K., Bäck, T., Badran, H., Braunroth, T., Calverley, T., Cox, D. M., Cullen, D. M., Fang, Y. D., Ganioğlu, E., Giles, M., Gomez Hornillos, M. B., Grahn, T., Greenlees, P. T., Hilton, J., Hodge, D., Ideguchi, E., Jakobsson, U., Johnson, A., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Khaplanov, A., Kumar Raju, M., Leino, M., Li, H., Liu, H., Matta, S., Modamio, V., Nara Singh, B. S., Niikura, M., Nyman, M., Özgür, I., Page, R. D., Pakarinen, J., Papadakis, P., Partanen, J., Paul, E. S., Petrache, C. M., Peura, P., Rahkila, P., Ruotsalainen, P., Sarén, J., Sorri, J., Stolze, S., Subramaniam, P., Taylor, M. J., Uusitalo, J., Valiente-Dobón, J. J., and Wyss, R.

Published
2020
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29. The TIGRESS Integrated Plunger ancillary systems for electromagnetic transition rate studies at TRIUMF

Author

Voss, P., Henderson, R., Andreoiu, C., Ashley, R., Austin, R.A.E., Ball, G.C., Bender, P.C., Bey, A., Cheeseman, A., Chester, A., Cross, D.S., Drake, T.E., Garnsworthy, A.B., Hackman, G., Holland, R., Ketelhut, S., Kowalski, P., Krücken, R., Laffoley, A.T., Leach, K.G., Miller, D., Mills, W.J., Moukaddam, M., Pearson, C.J., Pore, J., Rand, E.T., Rajabali, M.M., Rizwan, U., Shoults, J., Starosta, K., Svensson, C.E., Tardiff, E., Unsworth, C., Van Wieren, K., Wang, Z.-M., and Williams, J.

Published
2014
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31. Confirming band assignments in 167ytterbium with gamma-gamma-electron triple-coincidence spectroscopy

Author

Smallcombe, J., Davies, P. J., Barton, C. J., Andersson, L. L., Butler, P. A., Cox, D. M., Grahn, T., Greenlees, P. T., Hauschild, K., Herzan, A., Herzberg, R. -D., Jakobsson, U., Jenkins, D. G., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Lopez-Martens, A., Mistry, A., Nieminen, P., Pakarinen, J., Papadakis, P., Parr, E., Peura, P., Rahkila, P., Rinta-Antila, S., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., and Uusitalo, J.

Published
2019
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32. In-beam study of 253No using the SAGE spectrometer

Author

Mistry, A. K., Herzberg, R. -D., Greenlees, P. T., Papadakis, P., Auranen, K., Butler, P. A., Cox, D. M., Garnsworthy, A. B., Grahn, T., Hauschild, K., Jakobsson, U., Joss, D. T., Julin, R., Ketelhut, S., Konki, J., Leino, M., Lopez-Martens, A., Page, R. D., Pakarinen, J., Peura, P., Rahkila, P., Sandzelius, M., Scholey, C., Simpson, J., Seddon, D., Sorri, J., Stolze, S., Thornhill, J., Uusitalo, J., and Wells, D.

Published
2017
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33. A new differentially pumped plunger device to measure excited-state lifetimes in proton emitting nuclei

Author

Taylor, M.J., Cullen, D.M., Smith, A.J., McFarlane, A., Twist, V., Alharshan, G.A., Procter, M.G., Braunroth, T., Dewald, A., Ellinger, E., Fransen, C., Butler, P.A., Scheck, M., Joss, D.T., Saygi, B., McPeake, C.G., Grahn, T., Greenlees, P.T., Jakobsson, U., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nieminen, P., Pakarinen, J., Peura, P., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sarén, J., Scholey, C., Sorri, J., Stolze, S., and Uusitalo, J.

Published
2013
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36. A new recoil distance technique using low energy coulomb excitation in inverse kinematics

Author

Rother, W., Dewald, A., Pascovici, G., Fransen, C., Frießner, G., Hackstein, M., Ilie, G., Iwasaki, H., Jolie, J., Melon, B., Petkov, P., Pfeiffer, M., Pissulla, Th., Zell, K.-O., Jakobsson, U., Julin, R., Jones, P., Ketelhut, S., Nieminen, P., Peura, P., Rahkila, P., Uusitalo, J., Scholey, C., Harissopulos, S., Lagoyannis, A., Konstantinopoulos, T., Grahn, T., and Balabanski, D.

Published
2011
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40. Single-particle and collective excitations in the transitional nucleus 166Os

Author

Stolze, S, primary, Grahn, T, additional, Julin, R, additional, Joss, D T, additional, Andgren, K, additional, Auranen, K, additional, Bönig, S, additional, Cox, D, additional, Darby, I G, additional, Doncel, M, additional, Eeckhaudt, S, additional, Greenlees, P T, additional, Hadinia, B, additional, Herzáň, A, additional, Jakobsson, U, additional, Jones, P, additional, Juutinen, S, additional, Ketelhut, S, additional, Konki, J, additional, Kröll, T, additional, Leppänen, A-P, additional, Nyman, M, additional, Page, R D, additional, Pakarinen, J, additional, Partanen, J, additional, McPeake, C G, additional, O’Donnell, D, additional, Peura, P, additional, Rahkila, P, additional, Ruotsalainen, P, additional, Sandzelius, M, additional, Sarén, J, additional, Saygı, B, additional, Scholey, C, additional, Simpson, J, additional, Sorri, J, additional, Taylor, M J, additional, Thornthwaite, A, additional, and Uusitalo, J, additional

Published
2021
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44. Decay study of 246Fm at SHIP

Author

Venhart, M., Heßberger, F. P., Ackermann, D., Antalic, S., Gray-Jones, C., Greenlees, P. T., Heinz, S., Herzberg, R. -D., Hofmann, S., Ketelhut, S., Kindler, B., Kojouharov, I., Leino, M., Lommel, B., Mann, R., Papadakis, P., Rostron, D., Rudolph, D., Šáro, Š., and Sulignano, B.

Published
2011
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45. [formula omitted]-Decay branching ratios measured by [formula omitted]-ray tagging

Author

Bianco, L., Page, R.D., Joss, D.T., Simpson, J., Cederwall, B., Gómez Hornillos, M.B., Greenlees, P.T., Hadinia, B., Jakobsson, U., Jones, P.M., Julin, R., Ketelhut, S., Labiche, M., Leino, M., Nyman, M., Paul, E.S., Petri, M., Peura, P., Puurunen, A., Rahkila, P., Ruotsalainen, P., Sandzelius, M., Sapple, P.J., Sarén, J., Scholey, C., Thomson, J., and Uusitalo, J.

Published
2008
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46. Lifetime measurement in 195Po

Author

Grahn, T., Dewald, A., Greenlees, P. T., Jakobsson, U., Jolie, J., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Kröll, T., Krücken, R., Leino, M., Maierbeck, P., Melon, B., Nyman, M., Page, R. D., Peura, P., Pissulla, Th., Rahkila, P., Sarén, J., Scholey, C., Sorri, J., and Uusitalo, J.

Published
2009
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48. Single-particle and collective excitations in the transitional nucleus 166Os

Author

Stolze, Sanna, Grahn, Tuomas, Julin, R, Joss, D T, Andgren, K, Auranen, Kalle, Bönig, S, Cox, Daniel, Darby, I G, Doncel, M, Eeckhaudt, S, Greenlees, Paul T, Hadinia, B, Herzáň, Andrej, Jakobsson, Ulrika, Jones, P, Juutinen, Sakari, Ketelhut, S, Konki, Joonas, Kröll, T, Leppänen, A-P, Nyman, M, Page, R D, Pakarinen, J, Partanen, J, McPeake, C G, O’Donnell, D, Peura, Pauli, Rahkila, Panu, Ruotsalainen, Panu, Sandzelius, Mikael, Sarén, Jan, Saygı, B, Scholey, Catherine, Simpson, J, Sorri, Juha, Taylor, M J, Thornthwaite, A, and Uusitalo, Juha

Subjects
mean lifetimes, gamma-ray spectroscopy, mittaus, spektroskopia, kokeelliset menetelmät, collectivity, gammasäteily, fysiikka, Nuclear Experiment, RDDS measurements
Abstract

The mean lifetimes of the lowest energy 2+, 8+ and 9− states in 166Os have been measured using the recoil distance Doppler-shift method in conjunction with a selective recoil-decay tagging technique. These measurements extend studies into the most neutron-deficient mass region accessible to current experimental methods. The B(E2; 2+ → 0+) = 7(2) W.u. extracted from these measurements is markedly lower than those observed in the heavier even-mass Os isotopes. The 8+ and 9− states yield reduced transition probabilities that are consistent with single-particle transitions. While these values may indicate a departure from collective structure, the level scheme and the underlying nuclear configurations can also be interpreted in terms of a simple collective picture. This contrasting behaviour suggests an intriguing dichotomy in the description of heavy transitional nuclei. peerReviewed

Published
2021

49. Nuclear isomers in superheavy elements as stepping stones towards the island of stability

Author

Herzberg, R.-D., Greenlees, P. T., Butler, P. A., Jones, G. D., Venhart, M., Darby, I. G., Eeckhaudt, S., Eskola, K., Grahn, T., Gray-Jones, C., Hessberger, F. P., Jones, P., Julin, R., Juutinen, S., Ketelhut, S., Korten, W., Leino, M., Leppanen, A.-P., Moon, S., Nyman, M., Page, R. D., Pakarinen, J., Pritchard, A., Rahkila, P., Saren, J., Scholey, C., Steer, A., Sun, Y., Theisen, Ch., and Uusitalo, J.

Abstract

Author(s): R.-D. Herzberg (corresponding author) [1]; P. T. Greenlees [2]; P. A. Butler [1]; G. D. Jones [1]; M. Venhart [3]; I. G. Darby [1]; S. Eeckhaudt [2]; K. Eskola [...]

Published
2006
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50. Determination of α-decay branching ratios for 178, 179Hg

Author

Venhart, M., Andreyev, A. N., Antalic, S., Bianco, L., Greenlees, P. T., Jakobsson, U., Jones, P., Joss, D. T., Julin, R., Juutinen, S., Ketelhut, S., Leino, M., Nyman, M., Page, R. D., Peura, P., Rahkila, P., Sarén, J., Scholey, C., Sorri, J., Thomson, J., and Uusitalo, J.

Published
2012
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