45 research outputs found

    List of Indicators. BIO SOS Biodiversity Multisource Monitoring System: from Space TO Species (BIO SOS) Deliverable D2.1, pp28 http://www.biosos.wur.nl/UK/Deliverables/

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    To identify appropriate indicators for BIO_SOS we have used previous expert assessments of the SEBI “Streamlining European 2010 Biodiversity Indicators”, as well as the ongoing work for the CBD2020 assessments. BIO_SOS will focus on three main headline indicators covering: (i) habitats of European interest; (ii) abundance and distribution of selected plant species; and (iii) fragmentation and functional connectivity of Natural and semi-Natural areas. BIO_SOS will add indicators for pressure that can be detected through land cover changes at very fine resolutio

    Octupole excitations in the N=85 lanthanides

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    Excited states in Nd-145 and Sm-147 nuclei have been studied using heavy-ion induced reactions. Level schemes of both nuclei are very similar to the level scheme of Gd-149. In analogy to the Gd-149 isotone most of the observed excitations are interpreted as single-particle neutron excitations with octupole vibrations coupled to them. Candidates for double octupole-phonon states were identified in both nuclei

    INTERACTION STRENGTH AND SHAPE DIFFERENCE FOR THE H9/2 AND H11/2 CONFIGURATIONS IN TM-163

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    The strongly shape driving pi-h9/2[541]1/2- configuration with alpha = + 1/2 exhibits some anomalous, and so far unexplained, features concerning the crossing frequency, HBAR-omega-c, the aligned angular momentum, i(x), and interaction strength, at the alignment of the first pair of i13/2 quasineutrons in several odd-Z rare earth-nuclei. The h9/2[541]1/2- and h11/2[523]7/2- bands have been studied in the stably deformed rare-earth nucleus Tm-163 to investigate these features. A difference in band crossing frequency of approximately 80 keV between the two bands is found. Rotational bands built on these two configurations have been found to cross in the spin range I = 25/2 - 29/2 HBAR. The gamma-decay pattern between the two bands is established in the crossing region and analysed in terms of a moderate shape difference between them. A theoretical estimate of the size of the interaction strength between the two bands is presented and compared to the experimental value. The observed band structure in Tm-163 is very similar to that of Lu-167 which has 2 protons and 2 neutrons in addition. This observation is discussed in relation to the similarity of the yrast bands of the two even-even "core" nuclei Er-162 and 166Yb, for which the gamma-transition energies are identical within approximately 0.2 keV below the nu-i13/2 crossing

    INTERACTION STRENGTH AND SHAPE DIFFERENCE FOR THE H9/2 AND H11/2 CONFIGURATIONS IN TM-163

    No full text
    The strongly shape driving pi-h9/2[541]1/2- configuration with alpha = + 1/2 exhibits some anomalous, and so far unexplained, features concerning the crossing frequency, HBAR-omega-c, the aligned angular momentum, i(x), and interaction strength, at the alignment of the first pair of i13/2 quasineutrons in several odd-Z rare earth-nuclei. The h9/2[541]1/2- and h11/2[523]7/2- bands have been studied in the stably deformed rare-earth nucleus Tm-163 to investigate these features. A difference in band crossing frequency of approximately 80 keV between the two bands is found. Rotational bands built on these two configurations have been found to cross in the spin range I = 25/2 - 29/2 HBAR. The gamma-decay pattern between the two bands is established in the crossing region and analysed in terms of a moderate shape difference between them. A theoretical estimate of the size of the interaction strength between the two bands is presented and compared to the experimental value. The observed band structure in Tm-163 is very similar to that of Lu-167 which has 2 protons and 2 neutrons in addition. This observation is discussed in relation to the similarity of the yrast bands of the two even-even "core" nuclei Er-162 and 166Yb, for which the gamma-transition energies are identical within approximately 0.2 keV below the nu-i13/2 crossing
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