<?xml version="1.0" encoding="utf-8"?>
<export-example>
  <doc>
    <id>880</id>
    <completedYear>1995</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>82</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2014-10-28</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Die partielle Konversion von inkohärenter in kohärente Streuung an Protonen : das Ausfrieren der Quanten-Spin-Fluktuationen beim freien NH3-Rotator in Ni(NH3)6(PF6)2</title>
    <parentTitle language="deu">In:  	 Zeitschrift für Kristallographie  / Supplement issue  No. 9 (1995) , p. 82</parentTitle>
    <author>D. Ahlert</author>
    <author>Robert U. Franz</author>
    <author>D. Hohlwein</author>
    <author>W. Prandl</author>
    <author>P. Schiebel</author>
    <author>K. Siemensmeyer</author>
    <collection role="Hochschulbibliografie" number="1">Hochschulbibliografie</collection>
  </doc>
  <doc>
    <id>882</id>
    <completedYear>1996</completedYear>
    <publishedYear/>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>234</pageFirst>
    <pageLast>237</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>2014-10-28</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Partial conversion of neutron incoherent into coherent scattering by NH3 quantum rotators</title>
    <abstract language="eng">Neutron diffraction experiments on powders are used to investigate the quantum mechanical behaviour of uniaxial rotators, i.e. NH3-molecules in Ni(NH3)6(PF6)2, Co(NH3)6(PF6)2 and Ni(NH3)6I2. A diffuse temperature dependent component of the total scattering, modulated ∼ sin QrH-H/QrH-H, is observed at a temperature of ≃ 20 K and below. This observation is due to the fact, that on cooling the sample to kT ∼ B (rotational constant) the rotational ground state is strongly populated. The ground state of a uniaxial free rotator, however, is completely polarized. As a consequence the scattering of those NH3 groups being in the ground state becomes coherent and is observable in diffraction experiments.</abstract>
    <parentTitle language="eng">In: Physica B: Condensed Matter  226 (1996) 1–3, pp 234–237</parentTitle>
    <identifier type="doi">10.1016/0921-4526(96)00312-2</identifier>
    <author>P. Schiebel</author>
    <author>D. Ahlert</author>
    <author>Robert U. Franz</author>
    <author>D. Hohlwein</author>
    <author>W. Prandl</author>
    <author>K. Siemensmeyer</author>
    <author>K. Wulf</author>
    <collection role="Hochschulbibliografie" number="1">Hochschulbibliografie</collection>
  </doc>
</export-example>
