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Nuclear spin-dependent parity noncon...

Murphree, Dennis Haaga, Jr.

Nuclear spin-dependent parity nonconservation in diatomic molecules.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Nuclear spin-dependent parity nonconservation in diatomic molecules.
作者:	Murphree, Dennis Haaga, Jr.
面頁冊數:	160 p.
附註:	Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3560.
附註:	Adviser: David DeMille.
Contained By:	Dissertation Abstracts International70-06B.
標題:	Physics, Nuclear.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3361537
ISBN:	9781109198614

Nuclear spin-dependent parity nonconservation in diatomic molecules.
Murphree, Dennis Haaga, Jr.

Nuclear spin-dependent parity nonconservation in diatomic molecules. - 160 p.

Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3560.

Thesis (Ph.D.)--Yale University, 2009.

Nuclear spin-dependent parity nonconserving phenomena produce effects that are relevant to particle, nuclear, and atomic physics. They unite these increasingly disparate disciplines via the subtle effects of the weak force. Currently, weak interactions between nucleons present at best a confusing picture, and neutral weak coupling of leptons to baryons, even at high energy, is one of the most poorly characterized aspects of the Standard Model.

ISBN: 9781109198614Subjects--Topical Terms:

227654
Physics, Nuclear.

Nuclear spin-dependent parity nonconservation in diatomic molecules.
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502 $a Thesis (Ph.D.)--Yale University, 2009.
520 $a Nuclear spin-dependent parity nonconserving phenomena produce effects that are relevant to particle, nuclear, and atomic physics. They unite these increasingly disparate disciplines via the subtle effects of the weak force. Currently, weak interactions between nucleons present at best a confusing picture, and neutral weak coupling of leptons to baryons, even at high energy, is one of the most poorly characterized aspects of the Standard Model.
520 $a Perhaps surprisingly, one of the most effective laboratories for studying parity violation is the diatomic molecule. The naturally close spacing of molecular hyperfine-rotational levels, which can be Zeeman shifted even closer to degeneracy, allows small parity violating effects to be enhanced dramatically. Here we describe the beginning of our experimental program to study nuclear spin-dependent parity nonconservation (NSD-PNC) using a beam of diatomic free radicals. Specifically, we seek to measure weak matrix elements connecting hyperfine-rotational states in a series of molecules, beginning with barium fluoride. Our experimental technique is based on a Stark interference method: we look for asymmetries in transitions that depend on the sign of an applied electric field.
520 $a A key element in the experimental program is the magnetic field used to Zeeman shift the levels in our molecules to near crossing. Carefully controlling both the strength and uniformity of this field is critical to the success of the experiment. In order to measure the field over the wide range of values required by our experiment, both a completely novel nuclear magnetic resonance probe, as well as a unique field shimming apparatus and algorithm, were developed.
520 $a A second important element in the program is the ability to detect the states of our molecules with as high a signal to noise as possible. To that end a new detection method based on a two-photon transition was developed.
520 $a Both of these areas, which constitute the bulk of the author's contribution to the experimental program, are described in detail.
590 $a School code: 0265.
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