Title
Momentum Imaging of Molecular Ions: Momentum Spectroscopic Studies of Atomic and Molecular Ionisation,Used
Delivery time: 8-12 business days (International)
This thesis concerns the study of fragmentation dynamics of highly charged triatomic and polyatomic molecular ions created by high energy electron impact on neutrals. A momentum spectrometer was designed and assembled to carry out the study. An eventbyevent reconstruction of the momentum space spanned by the fragments helped us to study various aspects of dissociation, such as identification of channels, lifetime of metastables, kinetic energy release, angular distribution of fragments and preferential bond breaking. Some deductions are supported by quantum chemical computations. The symmetry of a molecular ion is often different from that of the ground state of the neutral. For a linear triatomic, CO_2, we deduced that geometry of the dication is different from that of the neutral. For polyatomics such as CCl_4 and SF_6, the change is very substantial and involves migration of atoms. In addition, we have identified certain stability patterns in the fragments. The stability depends on the possibility of forming filled hybrid molecular orbitals, which in turn is related to even/odd electron numbers in the fragment ions.
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Shipping & Returns
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We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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