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Topic: Isomeric states

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	Isomers.htm
		In contrast to shape isomers, which are due to a large change in deformation as seen in fission isomerism, spin and K isomers result from the angular momentum coupling of a few valence nucleons.
		Study of collective bands based on isomeric states is of considerable interest in order to understand the spin dependence of the goodness of the approximate symmetries leading to isomerism.
		Depopulation of this isomer via intermediate states, suggested by recent activation experiments using either real or virtual photons, has important implications in understanding the population and survival of this isomer in stellar environments.
	www.pas.rochester.edu /~cline/Isomers.htm (575 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		Since there are two unpaired particles contributing to the total J such a combination is termed a 2-quasiparticle state of excitation (the prefix being explained later.) However, in the nuclear case because of the strong spin-orbit coupling, flipping the spin of the proton also flips the orbit with its angular momentum.
		Such a "flipped" state is termed a "time-reversed orbital" by the nuclear community to emphasize the fact that both components of J for the particle turn over while locked together.
		Hf to a proximate state of mixed parentage with respect to K in order to trigger the release of the stored energy into a cascade of electromagnetic transitions between members of the GSB populated from the decay of the K-mixing level.
	www.utdallas.edu /research/quantum/Tutorial.htm (4515 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		Isomers which are referenced on this chart have a half-life greater than 10 ns.
		for isomeric state with half life between 1 microsecond and 1 millisecond.
		On the chart, the half life and spin relative to ground and isomeric states come from the ENSDF data.
	www.ganil.fr /lise/chart (102 words)

	Brief Description of Research
		isomeric state in sufficient quantities to carry out nuclear reactions on high spin isomeric targets.
		I was engaged in analysis of the experimental data using the FOFOS detector array at the Flerov Laboratory of Nuclear Reactions in Dubna and Hahn Meitner Institute in Berlin.
		In October 1997 I was invited in Idaho State University (ISU) to develop a fundamental photo-nuclear research program for the new Accelerator Center and to integrate this research with the current strength in applied nuclear science.
	www.tunl.duke.edu /~tonchev/research.html (935 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		Si,4n) reaction with pulsed beams and in a recoil-shadow geometry have led to the identification of four isomeric states in
		isomer is fed weakly by another isomer with a relatively long lifetime, but its precise decay has not been identified.
		state of the prolate band in each nucleus are shown in figure C.1.15 where they are also compared to the energies from calculations [3] of equilibrium shapes constrained to high-K configurations.
	wwwrsphysse.anu.edu.au /nuclear/99report/Pb188_99.html (381 words)

	Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
		The half lives and gamma energies of isomeric states of In/sup 114/, Ir/sup 194/, hf/sup 178/, ga/sup 72/, Ba/sup 135/, N a/sup 24/, Yb/sup 175, and Yb/sup 177 were determined and the results are tabulated.
		The isomeric level of As/sup 75m/ was detected, which indicates that its limit of sensitivity is aporoximately 15 msec.
		The In/sup 114m isomer with T/sub 1/2 = 0.042 sec was not detected but another isomeric state was found.
	www.osti.gov /energycitations/product.biblio.jsp?osti_id=4239670 (214 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		Their decay schemes are marked by the presence of isomeric states which can result both from structural changes and also from the reduction of intra-multiplet transition rates as one moves to the middle of the i
		A meanlife of 1150(30)ns was deduced for an isomeric state in
		Its decay properties are consistent with an isomer identified at an excitation energy of 2575 keV in independent measurements by Dracoulis et al.
	wwwrsphysse.anu.edu.au /nuclear/99report/Tl187_99.html (305 words)

	Nuclear Physics Research Group, University of Brighton (Site not responding. Last check: 2007-10-03)
		These are states which exist in a nucleus and live for a longer time than normally expected.
		However sometimes nuclear states are populated which live for longer than this and they are called isomeric states.
		There are many reasons that states could be isomeric e.g transitions depopulating the state could connect two levels with different shapes or they could require a large change in the angular momentum (spin) of the nucleus.
	www.nuclphys.eng.bton.ac.uk (664 words)

	Jahresbericht 1995, Inst. f. Kernchemie, Mainz (Site not responding. Last check: 2007-10-03)
		Isomeric states were already investigated in the early seventies using spontaneous-fission sources.
		Sr, it is not possible to give a clear-cut interpretation for the hindrance of the transitions depopulating the 1838 keV level.
		Sr (it should be mentioned that the intense ground state transition reported in previous studies could not be observed) would indeed correspond to the ones observed in
	dkcmzc.chemie.uni-mainz.de /~pfeiffer/jb96sr98.html (442 words)

	Titre de page
		The quadrupole moments of neutron core-excited states in the Fr-isotopes (with spins up to 65/2 hbar) are well reproduced assuming a core-polarization similar to that for a normal isomer with a similar number of neutron holes in the N=126 shell.
		Another type of isomers occurs in highly deformed nuclei, such as in the mass A~180 region where both protons and neutrons are far from magic numbers (Z~72 and N~108).
		Excited states in these nuclei are obtained either by rotation of the deformed charge state or by breaking a pair of nucleons (multi-quasi particle states).
	www.cyc.ucl.ac.be /CRCnews/crcnews03/crcnews03.html (2208 words)

	1
		Excitation of high-spin isomeric states in photonuclear reactions.
		Excitation of Isomeric States in Isotones (N=82) by (g,n) Reactions.
		An Excitation of Isomeric States in the (g,n) Reactions on Heavy Nuclei.
	www.physics.isu.edu /~tonchev/conference.html (877 words)

	- Dave Cullen's Home Page, last modified --- Wed Nov 2 12:36:36 2005 (Site not responding. Last check: 2007-10-03)
		These isomeric states have, therefore, affected the course of nucleosynthesis in stars and thus, the natural abundance of the heavy elements in the Universe.
		When these states ultimately decay, fundamental nuclear structure information, such as pairing correlations, residual interactions, selection rules and the stability of axially symmetric shapes, can be obtained by detecting the emitted gamma-rays using spectrometer arrays such as Euroball in Strasbourg, France and Gammasphere in California, USA.
		The only difference in the structure of the high-K states in these two mass regions is in the Mass 130-140, region the isomers are built upon neutron states with neutron number N=74 and in the Mass 170-180, region these are proton states with Z=74.
	nuclear.ph.man.ac.uk /~dmc (540 words)

	\alpha-decay half-lives of ground and isomeric states (Site not responding. Last check: 2007-10-03)
		The effective liquid drop model with only two parameters is generalized to describe the half-lives of α-transitions from ground states to ground states, from isomeric states to ground states, and from isomeric states to isomeric states.
		The calculated favoured α-decay half-lives of both ground states and isomeric states are in good agreement with the experimental data.
		Above results show that the effective liquid drop model is very efficient to calculate the α-decay half-lives of both the ground states and isomeric states.
	stacks.iop.org /0954-3899/31/959 (311 words)

	[No title] (Site not responding. Last check: 2007-10-03)
		The Influence of Deformation on the Isomeric Excitation of Eu Isotopes in the (g,n) and (n,g) Reactions.
		Excitation of Isomeric States 1h in (g,n) Reactions.
		Excitation of Isomeric States in Isotones by (g,n) Reactions.
	www.tunl.duke.edu /~tonchev/annual.html (514 words)

	Structure of high-spin states in /sup 143/Pm.
		High-spin states of /sup 143/Pm have been studied in the reactions /sup 141/Pr(alpha,2n)/sup 143/Pm and /sup 143/Nd(d,2n)/sup 143/Pm by means of in-beam spectroscopy.
		Positive- and negative-parity states with energies up to 4580 keV and spins up to /sup 25///sub 2/ have been established including 22 new levels.
		For two nanosecond isomeric states the nuclear spin precession in an external magnetic field was observed providing g-factors.
	mahazu.hazu.hr /~paar/Abstracts/210.htm (188 words)

	HRIBF Newsletter --- Winter Quarter 2000
		Proton branches to the low-lying 2+ state and to the 0+ ground state of the even-even deformed nucleus
		From this work it was possible to extract information on the structure of the proton-emitting state [2], as well as on the quadrupole deformation of the daughter nucleus.
		The isomer detection station consisted of a germanium clover detector placed just inside an 8-fold segmented BGO detector, which is normally used as a Compton-suppressor.
	www.phy.ornl.gov /hribf/news/winter_00.html (4287 words)

	Project_7
		A novel recoil spectrometer is being developed at the department to study the decay of long lived (isomeric) nuclear states.
		Studying the nuclear decay properties of these states, involving gamma-rays and conversion electrons offers a unique tool to probe unusual aspects of nuclear structure.
		The isomeric states itself will be formed in reactions with heavy ion beams from the ANU 14UD accelerator.
	www.anu.edu.au /physics/new/PHYS3044_45/project_7.htm (164 words)

	HomPage3 (Site not responding. Last check: 2007-10-03)
		My research interests are focused on the investigation of high spin isomeric states in photonuclear reactions at the Giant Dipole Resonance Region using the electron eccelerators.
		Also I am interested in the study of the nuclear structure (isomeric states, giant resonance, "scissors" mode, deformed and hyperdeformed states, alpha particle clustering), nuclear dynamics (nuclear fission, gamma and particle emission, transition from chaos to order) and high-spin isomeric targets production.
		"Investigation of Isomeric States in Photonuclear Reactions in the Giant Dipole Resonance Region", Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, Russia, 06/1995.
	www.physics.isu.edu /~tonchev (130 words)

	Mattice Group: Condensed Tannins (Site not responding. Last check: 2007-10-03)
		The transition between these two conformations is achieved by rotational isomeric state (RIS) transitions at the interflavan bond (the bond between monomer units).
		The structures of some condensed tannins favor propagation of the same rotational isomeric state at consecutive interflavan bonds, thereby producing helices.
		The transition between rotational isomeric states is slow on the time scale defined by the fluorescence lifetime of the condensed tannins, but is usually fast on the nmr time scale.
	gozips.uakron.edu /~mattice/tannin.html (240 words)

	Mattice group: Prof. Ivet Bahar (Site not responding. Last check: 2007-10-03)
		Haliloglu T; Bahar I; Erman B; Kim E; Mattice WL "A dynamic rotational isomeric state approach for extension of the time scale of the local dynamics observed in fully atomistic molecular dynamics simulations: Application to polybutadien" J.
		Bahar I; Mattice, WL "Efficient calculation of the intramolecular contribution to orientational autocorrelation functions using dynamic rotational isomeric state theory" Macromolecules 1990, 23, 2719-2723.
		Bahar I; Mattice, WL "Dynamics of conformational transitions to isomeric states favoring intramolecular excimer formation in aromatic polyesters with methylene or oxyethylene spacers" J.
	gozips.uakron.edu /~mattice/bahar.html (444 words)

	Journal of Medical Chemical Defense (Site not responding. Last check: 2007-10-03)
		Sulfur mustard (bis- (2-chloroethyl) sulfide; HD) was acquired from the United States Army Soldier and Biological Chemical Command (Aberdeen Proving Ground, MD, USA).
		V NMR resonances for the decamolybdodivanadophosphate in deuterated aqueous solutions evidence the coexistence of multiple positional isomers.
		The large linewidth of the signal at δ–535 ppm is indicative of an equilibrium mixture of α- and β- Keggin structural isomers.
	www.jmedchemdef.org /Issue_0301/Arroyo/Arroyo_08_05.htm (3185 words)

	Posters
		Please, note that posters can be put during the first day of the conference, and boards are 90 cm wide and 150 cm high.
		The title of the poster, author(s) and their affiliations should be clearly stated in large letters at the top of the display board.
		Population of Isomeric States of Nuclei from A=100-160 Mass Range in Photoneutronic reactions
	www.cica.es /aliens/ENPE99/posters.html (811 words)

	McCammon Group: Publications 1985 - 1989
		Sidechain Rotational Isomerization in Proteins: Dynamic Simulation with Solvent Surroundings.
		Treatment of Rotational Isomers in Free Energy Evaluations.
		Molecular Dynamics Simulation Study of 18-crown-6 in Aqueous Solution as an Example of Systems with Large Numbers of Rotational Isomeric States.
	mccammon.ucsd.edu /pubs/pubs85.html (996 words)

	INDEPENDENCE - Online Information article about INDEPENDENCE
		Utah settled here, moving the headquarters of the " Central States' See also:
		SERIES (a Latin word from serere, to join)
		series of compounds isomeric with these alkyl derivatives is known, and can be considered as derived from the ring system +CGH4: ICH2]2: C(CO2C2Hb)2; this ester on See also:
	encyclopedia.jrank.org /I27_INV/INDEPENDENCE.html (900 words)

	CWP at physics.UCLA.edu // Gertrude Scharff Goldhaber
		With her husband, Maurice Goldhaber, confirmed the identity of beta rays with atomic electrons by showing that the Pauli exclusion principle operates in states of a constituent beta ray particle and an atomic electron.
		Pioneered various developments in nuclear structure studies, such as: systematics of excited states in even-even nuclei; long lived isomers, some of which exhibit K-forbiddeness; variable moment of inertia model, relation of moment of inertia to quadrupole moment, and pseudomagic nuclei.
		"Phenomenological Analysis of Ground State Bands in Even-Even Nuclei," Phys.
	cwp.library.ucla.edu /Phase2/Goldhaber,_Gertrude_Scharff@812345678.html (584 words)

	Nuclear « Physics « Science (Site not responding. Last check: 2007-10-03)
		Joint Institute for Nuclear Research - An intergovernmental organization created in order to unify the intellectual and material potential of Member States to study the fundamental properties of matter.
		Brookhaven Nuclear Wallet Cards - Selected properties of all known nuclides and their known isomeric states.
		University of Birmingham - Research Groups in Nuclear Physics - Includes information about postgraduate admissions, lists of staff, publications and seminars, and brief introductions to the research that is undertaken.
	www.directorylistings.info /Science/Physics/Nuclear (589 words)

	Nuclear Wallet Cards
		Nuclear Wallet Cards are distributed as a booklet as well as in PDA-adaptable Palm Pilot format, ASCII version is available upon request.
		A web-based version of Nuclear Wallet Cards provides search capabilities on ground and isomeric states level properties.
		Last updated by Boris Pritychenko on October 7, 2004.
	www-nds.ipen.br /wallet (95 words)

	Generic Cipro (Site not responding. Last check: 2007-10-03)
		Making an exact copy of a pharmaceutical is quite simple.
		Our state of the art laboratories are able to replicate all major name brand pharmaceuticals quite easily, and complex and routine testing assures us that our products are an exact match.
		Psychosomatic archdiocese do a job on the confirmable Welshman with silent
	streptococcus-pneumoniae.musicminus1.com (1875 words)

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