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1. Science Goals and Mission Architecture of the Europa Lander Mission Concept

Author

K. P. Hand, C. B. Phillips, A. Murray, J. B. Garvin, E. H. Maize, R. G. Gibbs, G. Reeves, A. M. San Martin, G. H. Tan-Wang, J. Krajewski, K. Hurst, R. Crum, B. A. Kennedy, T. P. McElrath, J. C. Gallon, D. Sabahi, S. W. Thurman, B. Goldstein, P. Estabrook, S. W. Lee, J. A. Dooley, W. B. Brinckerhoff, K. S. Edgett, C. R. German, T. M. Hoehler, S. M. Hörst, J. I. Lunine, C. Paranicas, K. Nealson, D. E. Smith, A. S. Templeton, M. J. Russell, B. Schmidt, B. Christner, B. Ehlmann, A. Hayes, A. Rhoden, P. Willis, R. A. Yingst, K. Craft, M. E. Cameron, T. Nordheim, J. Pitesky, J. Scully, J. Hofgartner, S. W. Sell, K. J. Barltrop, J. Izraelevitz, E. J. Brandon, J. Seong, J.-P. Jones, J. Pasalic, K. J. Billings, J. P. Ruiz, R. V. Bugga, D. Graham, L. A. Arenas, D. Takeyama, M. Drummond, H. Aghazarian, A. J. Andersen, K. B. Andersen, E. W. Anderson, A. Babuscia, P. G. Backes, E. S. Bailey, D. Balentine, C. G. Ballard, D. F. Berisford, P. Bhandari, K. Blackwood, G. S. Bolotin, E. A. Bovre, J. Bowkett, K. T. Boykins, M. S. Bramble, T. M. Brice, P. Briggs, A. P. Brinkman, S. M. Brooks, B. B. Buffington, B. Burns, M. L. Cable, S. Campagnola, L. A. Cangahuala, G. A Carr, J. R. Casani, N. E. Chahat, B. K. Chamberlain-Simon, Y. Cheng, S. A. Chien, B. T. Cook, M. Cooper, M. DiNicola, B. Clement, Z. Dean, E. A. Cullimore, A. G. Curtis, J-P. de la Croix, P. Di Pasquale, E. M. Dodd, L. A. Dubord, J. A. Edlund, R. Ellyin, B. Emanuel, J. T. Foster, A. J. Ganino, G. J. Garner, M. T. Gibson, M. Gildner, K. J. Glazebrook, M. E. Greco, W. M. Green, S. J. Hatch, M. M. Hetzel, W. A. Hoey, A. E. Hofmann, R. Ionasescu, A. Jain, J. D. Jasper, J. R. Johannesen, G. K. Johnson, I. Jun, A. B. Katake, S. Y. Kim-Castet, D. I. Kim, W. Kim, E. F. Klonicki, B. Kobeissi, B. D. Kobie, J. Kochocki, M. Kokorowski, J. A. Kosberg, K. Kriechbaum, T. P. Kulkarni, R. L. Lam, D. F. Landau, M. A. Lattimore, S. L. Laubach, C. R. Lawler, G. Lim, J. Y Lin, T. E. Litwin, M. W. Lo, C. A. Logan, E. Maghasoudi, L. Mandrake, Y. Marchetti, E. Marteau, K. A. Maxwell, J. B. Mc Namee, O. Mcintyre, M. Meacham, J. P. Melko, J. Mueller, D. A. Muliere, A. Mysore, J. Nash, H. Ono, J. M. Parker, R. C. Perkins, A. E Petropoulos, A. Gaut, M. Y. Piette Gomez, R. P. Casillas, M. Preudhomme, G. Pyrzak, J. Rapinchuk, J. M. Ratliff, T. L. Ray, E. T. Roberts, K. Roffo, D. C. Roth, J. A. Russino, T. M. Schmidt, M. J. Schoppers, J. S. Senent, F. Serricchio, D. J. Sheldon, L. R. Shiraishi, J. Shirvanian, K. J. Siegel, G. Singh, A. R. Sirota, E. D. Skulsky, J. S. Stehly, N. J. Strange, S. U. Stevens, E. T. Sunada, S. P. Tepsuporn, L. P. C. Tosi, N. Trawny, I. Uchenik, V. Verma, R. A. Volpe, C. T. Wagner, D. Wang, R. G. Willson, J. L. Wolff, A. T. Wong, A. K. Zimmer, K. G. Sukhatme, K. A. Bago, Y. Chen, A. M. Deardorff, R. S. Kuch, C. Lim, M. L. Syvertson, G. A. Arakaki, A. Avila, K. J. DeBruin, A. Frick, J. R. Harris, M. C. Heverly, J. M. Kawata, S.-K. Kim, D. M. Kipp, J. Murphy, M. W. Smith, M. D. Spaulding, R. Thakker, N. Z. Warner, C. R. Yahnker, M. E. Young, T. Magner, D. Adams, P. Bedini, L. Mehr, C. Sheldon, S. Vernon, V. Bailey, M. Briere, M. Butler, A. Davis, S. Ensor, M. Gannon, A. Haapala-Chalk, T. Hartka, M. Holdridge, A. Hong, J. Hunt, J. Iskow, F. Kahler, K. Murray, D. Napolillo, M. Norkus, R. Pfisterer, J. Porter, D. Roth, P. Schwartz, L. Wolfarth, E. H. Cardiff, E. W. Grob, J. R. Adam, E. Betts, J. Norwood, M. M. Heller, T. Voskuilen, P. Sakievich, L. Gray, D. J. Hansen, K. W. Irick, J. C. Hewson, J. Lamb, S. C. Stacy, C. M. Brotherton, A. S Tappan, D. Benally, H. Thigpen, E. Ortiz, D. Sandoval, A. M. Ison, M. Warren, P. G. Stromberg, P. M. Thelen, B. Blasy, P. Nandy, A. W. Haddad, L. B. Trujillo, T. H. Wiseley, S. A. Bell, N. P. Teske, C. Post, L. Torres-Castro, C. Grosso, and M. Wasiolek

Published
2022
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2. Science Goals and Mission Architecture of the Europa Lander Mission Concept

Author

K. P. Hand, C. B. Phillips, A. Murray, J. B. Garvin, E. H. Maize, R. G. Gibbs, G. Reeves, A. M. San Martin, G. H. Tan-Wang, J. Krajewski, K. Hurst, R. Crum, B. A. Kennedy, T. P. McElrath, J. C. Gallon, D. Sabahi, S. W. Thurman, B. Goldstein, P. Estabrook, S. W. Lee, J. A. Dooley, W. B. Brinckerhoff, K. S. Edgett, C. R. German, T. M. Hoehler, S. M. Hörst, J. I. Lunine, C. Paranicas, K. Nealson, D. E. Smith, A. S. Templeton, M. J. Russell, B. Schmidt, B. Christner, B. Ehlmann, A. Hayes, A. Rhoden, P. Willis, R. A. Yingst, K. Craft, M. E. Cameron, T. Nordheim, J. Pitesky, J. Scully, J. Hofgartner, S. W. Sell, K. J. Barltrop, J. Izraelevitz, E. J. Brandon, J. Seong, J.-P. Jones, J. Pasalic, K. J. Billings, J. P. Ruiz, R. V. Bugga, D. Graham, L. A. Arenas, D. Takeyama, M. Drummond, H. Aghazarian, A. J. Andersen, K. B. Andersen, E. W. Anderson, A. Babuscia, P. G. Backes, E. S. Bailey, D. Balentine, C. G. Ballard, D. F. Berisford, P. Bhandari, K. Blackwood, G. S. Bolotin, E. A. Bovre, J. Bowkett, K. T. Boykins, M. S. Bramble, T. M. Brice, P. Briggs, A. P. Brinkman, S. M. Brooks, B. B. Buffington, B. Burns, M. L. Cable, S. Campagnola, L. A. Cangahuala, G. A Carr, J. R. Casani, N. E. Chahat, B. K. Chamberlain-Simon, Y. Cheng, S. A. Chien, B. T. Cook, M. Cooper, M. DiNicola, B. Clement, Z. Dean, E. A. Cullimore, A. G. Curtis, J-P. de la Croix, P. Di Pasquale, E. M. Dodd, L. A. Dubord, J. A. Edlund, R. Ellyin, B. Emanuel, J. T. Foster, A. J. Ganino, G. J. Garner, M. T. Gibson, M. Gildner, K. J. Glazebrook, M. E. Greco, W. M. Green, S. J. Hatch, M. M. Hetzel, W. A. Hoey, A. E. Hofmann, R. Ionasescu, A. Jain, J. D. Jasper, J. R. Johannesen, G. K. Johnson, I. Jun, A. B. Katake, S. Y. Kim-Castet, D. I. Kim, W. Kim, E. F. Klonicki, B. Kobeissi, B. D. Kobie, J. Kochocki, M. Kokorowski, J. A. Kosberg, K. Kriechbaum, T. P. Kulkarni, R. L. Lam, D. F. Landau, M. A. Lattimore, S. L. Laubach, C. R. Lawler, G. Lim, J. Y Lin, T. E. Litwin, M. W. Lo, C. A. Logan, E. Maghasoudi, L. Mandrake, Y. Marchetti, E. Marteau, K. A. Maxwell, J. B. Mc Namee, O. Mcintyre, M. Meacham, J. P. Melko, J. Mueller, D. A. Muliere, A. Mysore, J. Nash, H. Ono, J. M. Parker, R. C. Perkins, A. E Petropoulos, A. Gaut, M. Y. Piette Gomez, R. P. Casillas, M. Preudhomme, G. Pyrzak, J. Rapinchuk, J. M. Ratliff, T. L. Ray, E. T. Roberts, K. Roffo, D. C. Roth, J. A. Russino, T. M. Schmidt, M. J. Schoppers, J. S. Senent, F. Serricchio, D. J. Sheldon, L. R. Shiraishi, J. Shirvanian, K. J. Siegel, G. Singh, A. R. Sirota, E. D. Skulsky, J. S. Stehly, N. J. Strange, S. U. Stevens, E. T. Sunada, S. P. Tepsuporn, L. P. C. Tosi, N. Trawny, I. Uchenik, V. Verma, R. A. Volpe, C. T. Wagner, D. Wang, R. G. Willson, J. L. Wolff, A. T. Wong, A. K. Zimmer, K. G. Sukhatme, K. A. Bago, Y. Chen, A. M. Deardorff, R. S. Kuch, C. Lim, M. L. Syvertson, G. A. Arakaki, A. Avila, K. J. DeBruin, A. Frick, J. R. Harris, M. C. Heverly, J. M. Kawata, S.-K. Kim, D. M. Kipp, J. Murphy, M. W. Smith, M. D. Spaulding, R. Thakker, N. Z. Warner, C. R. Yahnker, M. E. Young, T. Magner, D. Adams, P. Bedini, L. Mehr, C. Sheldon, S. Vernon, V. Bailey, M. Briere, M. Butler, A. Davis, S. Ensor, M. Gannon, A. Haapala-Chalk, T. Hartka, M. Holdridge, A. Hong, J. Hunt, J. Iskow, F. Kahler, K. Murray, D. Napolillo, M. Norkus, R. Pfisterer, J. Porter, D. Roth, P. Schwartz, L. Wolfarth, E. H. Cardiff, E. W. Grob, J. R. Adam, E. Betts, J. Norwood, M. M. Heller, T. Voskuilen, P. Sakievich, L. Gray, D. J. Hansen, K. W. Irick, J. C. Hewson, J. Lamb, S. C. Stacy, C. M. Brotherton, A. S Tappan, D. Benally, H. Thigpen, E. Ortiz, D. Sandoval, A. M. Ison, M. Warren, P. G. Stromberg, P. M. Thelen, B. Blasy, P. Nandy, A. W. Haddad, L. B. Trujillo, T. H. Wiseley, S. A. Bell, N. P. Teske, C. Post, L. Torres-Castro, C. Grosso, and M. Wasiolek

Subjects
Geophysics, Space and Planetary Science, Earth and Planetary Sciences (miscellaneous), Astronomy and Astrophysics
Abstract

Europa is a premier target for advancing both planetary science and astrobiology, as well as for opening a new window into the burgeoning field of comparative oceanography. The potentially habitable subsurface ocean of Europa may harbor life, and the globally young and comparatively thin ice shell of Europa may contain biosignatures that are readily accessible to a surface lander. Europa’s icy shell also offers the opportunity to study tectonics and geologic cycles across a range of mechanisms and compositions. Here we detail the goals and mission architecture of the Europa Lander mission concept, as developed from 2015 through 2020. The science was developed by the 2016 Europa Lander Science Definition Team (SDT), and the mission architecture was developed by the preproject engineering team, in close collaboration with the SDT. In 2017 and 2018, the mission concept passed its mission concept review and delta-mission concept review, respectively. Since that time, the preproject has been advancing the technologies, and developing the hardware and software, needed to retire risks associated with technology, science, cost, and schedule.

Published
2022
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3. The Structure and Ferrimagnetic Behavior of meso ‐Tetraphenyl‐ porphinatomanganese( <scp>III</scp> ) Tetrachloro‐1,4‐Benzoquinonide, [Mn III TPP] + [QCl 4 ] . − ⋅PhMe: Evidence of a Quinoidal Structure for [QCl 4 ] . −

Author

Joel S. Miller, Robin D. Rogers, E. J. Brandon, and Brian M. Burkhart

Subjects
chemistry.chemical_classification, Chemistry, Stereochemistry, Organic Chemistry, Structure (category theory), chemistry.chemical_element, General Chemistry, Polymer, Manganese, Catalysis, Antiferromagnetic coupling, Crystallography, Ferrimagnetism, Magnet, Molecule, Structural motif
Abstract

A noncyanocarbon-based molecule-based magnet [MnIIITPP]+[QCl4].− has been prepared, comprising tetraphenylporphinatomanganese(III), MnIIITPP, and tetrachloro-1,4-benzosemiquinone, QCl4. As structural motif it has a coordination-polymer structure with uniform, one-dimensional linear chains of alternating, albeit disordered, [MnIIITPP]+ cations and [QCl4].− radical anions. Intrachain antiferromagnetic coupling J/kB, −89 K (−62 cm−1, 134 cal mol−1, 7.5 meV) is noted. Two magnetically ordered states at 13 and at 7 K are observed (right).

Published
1998
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4. Ferrimagnetic Behavior of Multiple Phases and Solvates of (meso-Tetrakis(4-chlorophenyl)porphinato)manganese(III) Tetracyanoethenide, [MnTClPP]+[TCNE]•-. Enhancement of Magnetic Coupling by Thermal Annealing

Author

and Atta M. Arif, E. J. Brandon, Durrell K. Rittenberg, and Joel S. Miller

Subjects
Magnetic moment, Inorganic chemistry, chemistry.chemical_element, Manganese, Crystal structure, Magnetic susceptibility, Toluene, Inorganic Chemistry, Crystallography, chemistry.chemical_compound, chemistry, Ferrimagnetism, Physical and Theoretical Chemistry, Group 2 organometallic chemistry, Dichloromethane
Abstract

(meso-Tetrakis(4-chlorophenyl)porphinato)manganese(III) tetracyanoethenide, [MnTClPP][TCNE], has been prepared and structurally characterized as the toluene and dichloromethane disolvates, and the magnetic and thermal properties of these solvates, as well as their corresponding desolvates, have been determined.

Published
1998
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5. Long-range magnetic order in the quasi-1D metalloporphyrin family of molecule-based magnets

Author

Jamie L. Manson, K. I. Sugiura, E. J. Brandon, M. A. Girtu, Joel S. Miller, Arthur J. Epstein, and Charles M. Wynn

Subjects
Condensed matter physics, Chemistry, Mechanical Engineering, Metals and Alloys, Condensed Matter Physics, Magnetic susceptibility, Porphyrin, Electronic, Optical and Magnetic Materials, Ion, Crystallography, chemistry.chemical_compound, Dipole, Mechanics of Materials, Ferrimagnetism, Materials Chemistry, Anisotropy, Spin (physics), Molecule-based magnets
Abstract

The unusual magnetic properties of various members of the quasi-1D manganese-porphyrin family are reviewed. Typical members of the family consist of spin S = 2 Mn III porphyrin ions alternating with trans-μ 2 -bonded spin s = 1/2 acceptors [C 2 (CN) 4 ] − or [C 4 (CN) 6 ] − . All members exhibit 1D behavior at high temperatures as evidenced by their similarities to predictions for mixed quantumclassical ferrimagnetic chains. Below approximately 50 K, deviations from one-dimensionality are observed due to the effects of interchain interactions. The competition between interchain exchange, single-ion anisotropy, and dipolar interactions are considered when examining the remarkable differences in the low temperature magnetic states of the various compounds.

Published
1997
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6. The versatile coordination chemistry of tricyanoethenolate, [(NC)2C=C(CN)O]−

Author

Atta M. Arif, Glenn P. A. Yap, E. J. Brandon, Arnold L. Rheingold, and Joel S. Miller

Subjects
Inorganic Chemistry, chemistry.chemical_classification, chemistry.chemical_compound, Crystallography, Chemistry, Inorganic chemistry, Materials Chemistry, Crystal structure, Physical and Theoretical Chemistry, Tetracyanoethylene, Coordination complex
Abstract

The reaction of meso-tetrakis (4-dimethoxyphenyl) porphinatomanganese(II), MnTPOMeP, with TCNE (TCNE = tetracyanoethylene) leads to the formation of [MnTPOMeP]+ [TCNE]− and [MnTPOMeP]+[OC(CN)C(CN)2]−. The single-crystal X-ray structures of the latter as well as [Cu(bipy)2Cl]+ [OC(CN)C(CN)2]− were determined. The former has a disordered [OC(CN)C(CN)2]− bridging via C and O between a pair of MnIII sites, whereas the latter has an isolated [OC(CN)C(CN)2]− unbound to CuII. The IR characterization for μ2-C,O bound [OC(CN)C(CN)2]− is at 2219m and 2196s (νCN) cm−1 and at 1558s (νCO) cm−1 while for unbound [OC(CN)C(CN)2]− it is at 2210m, 2203m, 2181m (νCN) cm−1 and at 1583s (νCO) cm−1.

Published
1995
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8. Magnetization and dynamics of reentrant ferrimagnetic spin-glass [MnTPP]::+[TCNE].−⋅2PhMe

Author

William B. Brinckerhoff, A. J. Epstein, Joel S. Miller, E. J. Brandon, and B. G. Morin

Subjects
chemistry.chemical_compound, Magnetization, Materials science, Reduced properties, Spin glass, chemistry, Condensed matter physics, Ferrimagnetism, Direct current, General Physics and Astronomy, Tetracyanoethylene, Critical exponent, Magnetic susceptibility
Abstract

We present direct current (dc) magnetization M(T,H) and alternating current (ac) susceptibility χac(T,H,f) data for the quasi‐one‐dimensional molecule‐based ferrimagnet [MnTPP]::+[TCNE].−⋅2PhMe (TPP=meso‐tetraphenylporphyrinato, TCNE=tetracyanoethylene). Static scaling of the real part χ′ of the ac susceptibility and data collapse of M(T,H) over a limited reduced temperature range above Tc≊13 K lead to the critical exponents γ≊1.6, β≊0.5, and δ≊4.2. Below Tc, χac depends sensitively on frequency and exhibits a striking double‐peak structure similar to that found in reentrant spin glasses. Possible models for the frequency dependence of the peaks observed in χac are discussed.

Published
1996
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